Bug Saving a prefab freezes the editor indefinetely if the PlasticSCM tab is open

There is a breaking bug which hampers production for all team members when working with plastic in unity.

Unity: 2020.3.40f1
Version Control: 1.17.2
PlasticSCM: 11.0.16.7460

Issue is very simple, if you save a prefab while the PlasticSCM tab is open (does NOT have to be in focus) in the editor triggers ProjectBrowser.OnGUI.Repaint in very strange intervals. Sometimes it could happen instantly after opening the editor, sometime it happens after you save 2-3 times, sometimes it happens after 5-10 times, but it will ALWAYS happen no matter what without any fault, its a ticking time-bug waiting to happen.



The ONLY workaround that I found which have been implemented team-wide is to NOT have the PlasticSCM tab open in the editor i.e. Rightclick (PlasticSCM) -> Close Tab. This solves the issue and this never happens. As soon as you open the PlasticSCM tab, the bug may happen at the prev. mentioned intervals.

While writing this message the message is still up and the editor is not responsive and still stuck.



I searched the forums and found that this bug may have been present and fixed earlier but only for the case of launching the editor where PlasticSCM could get stuck if certain conditions had been met (Not being logged in, loosing internet connection etc.)

However this is not fixed and I have seen no mention of this bug in the forums. This happens for all team members (10+) if the PlasticSCM tab is open.

 

Issue still persists on Version Control Package 1.17.6



As mentioned in my original post, this does not always happen. Sometimes it happens instantly sometimes it happens after a few tries. This bug just happened because I accidentally left the PlasticSCM tab open and was in the process of moving a gameobject in the scene and pressing Ctrl-S (not modifying a prefab).

Usually the fastest way to reproduce the issue is to (very quickly) make changes and save them without giving the editor time to refresh. This forces the editor to freeze like this. I tried to reproduce this bug multiple times after it having triggered already and I had to force close the editor in task manager but it was not possible to reporoduce. So it may have something to do with executing a specific set of actions before it triggering.

 

So this just happened as the first thing when launching unity today and saving a change made to a prefab.
It seems like a different process froze up the editor but the behavior is consistent with the previous one "ProjectBrowser.OnGUI.repaint"

 

I've been running into this issue as well. I checked my logs and found an error (pasted below). The exclusive checkout error is strange because my PlastiSCM user is the one whom has it exclusively checked out. I redacted my email in the logs.

PlasticSCM: 11.0.16.7411
Unity3D: 2021.3.7f1
Version Control: 1.17.6

2022-12-06 23:04:59,678 FALCON-ONE\jaden DEBUG CmProxy - Error invoking LockItems. These items are exclusively checked out by:

/Assets/_prefabs/Entities/Interactables/Openables/Cabinet.prefab (wk:hazmats:d799898b-77e6-4942-8b27-cffddf4165af owner:redactedemail@gmail.com)

.

  at PlasticPipe.PlasticProtocol.Client.ClientTransport.SendAndWait (PlasticPipe.PlasticServer plasticServer, PlasticPipe.PlasticProtocol.Messages.PlasticMethods method, Codice.CM.Common.Credentials creds, PlasticPipe.PlasticProtocol.Messages.INetworkMessage msg, PlasticPipe.PlasticProtocol.Messages.INetworkMessage response, System.Boolean bRetryWriteMethod, Codice.Utils.Buffers.FlexibleBufferPool lz4BufferPool, PlasticPipe.PlasticProtocol.Client.ClientTransport+INegotiateActiveDirectory negotiateActiveDirectory, System.Int32 connTimeoutMsec, PlasticPipe.PlasticProtocol.Client.ClientTransport+IResolveCloudServer resolveCloudServer) [0x00342] in <1e51439243a4446392211eb63cd2b663>:0

  at PlasticPipe.PlasticProtocol.Client.ClientTransport.SendAndWaitWithRetry (PlasticPipe.PlasticServer server, PlasticPipe.PlasticProtocol.Messages.PlasticMethods method, Codice.CM.Common.Credentials creds, PlasticPipe.PlasticProtocol.Messages.INetworkMessage msg, PlasticPipe.PlasticProtocol.Messages.INetworkMessage response, Codice.Utils.Buffers.FlexibleBufferPool lz4BufferPool, PlasticPipe.PlasticProtocol.Client.ClientTransport+INegotiateActiveDirectory negotiateActiveDirectory, System.Int32 connTimeoutMsec, PlasticPipe.PlasticProtocol.Client.ClientTransport+IResolveCloudServer resolveCloudServer) [0x00158] in <1e51439243a4446392211eb63cd2b663>:0

  at PlasticPipe.PlasticProtocol.Client.ClientTransport.InvokeMethod (PlasticPipe.PlasticServer server, PlasticPipe.PlasticProtocol.Messages.PlasticMethods method, Codice.CM.Common.Credentials creds, PlasticPipe.PlasticProtocol.Messages.INetworkMessage msg, PlasticPipe.PlasticProtocol.Messages.INetworkMessage response) [0x00008] in <1e51439243a4446392211eb63cd2b663>:0

  at Codice.Client.Common.Connection.PlasticProtocolCmProxy+PlasticProtocolMethodInvoker.DoInvokeMethod (PlasticPipe.PlasticServer server, Codice.CM.Common.Credentials creds, System.Exception& ex) [0x00002] in <1e51439243a4446392211eb63cd2b663>:0

2022-12-06 23:04:59,678 FALCON-ONE\jaden DEBUG CmProxy - InvokeRemoteMethod failed. Server = Firelight@cloud. Error = These items are exclusively checked out by:

/Assets/_prefabs/Entities/Interactables/Openables/Cabinet.prefab (wk:hazmats:d799898b-77e6-4942-8b27-cffddf4165af owner:redactedemail@gmail.com)

. retryOn = Authentication, HostUnreachable, ServerCertificate

2022-12-06 23:04:59,679 FALCON-ONE\jaden DEBUG WorkspaceTree - Clean() WkId d799898b-77e6-4942-8b27-cffddf4165af

2022-12-06 23:04:59,747 FALCON-ONE\jaden DEBUG ChannelCall - protocol:plasticproto sec:ssl  sentb:     769|sendt:   0|recb:    3716|rect: 300|prt:     401|sert: 330|dest:   0|zip:   0| Firelight@cloud|GetBranchInfoByName

2022-12-06 23:04:59,748 FALCON-ONE\jaden DEBUG PlasticPipe - prt:     406|GetBranchInfoByName           |Firelight@cloud

2022-12-06 23:05:00,222 FALCON-ONE\jaden DEBUG WorkspaceStatus: DiskChangesSearcher - Process changes: 860

2022-12-06 23:05:02,740 FALCON-ONE\jaden DEBUG WatcherFsNodeReader - FsWatcher. Event path:'d:\Firelight\hazmats\.plastic' type:Changed

2022-12-06 23:05:02,740 FALCON-ONE\jaden DEBUG WatcherFsNodeReader - FsWatcher. Event path:'d:\Firelight\hazmats\.plastic\plastic.trees.lck' type:Created

2022-12-06 23:05:02,740 FALCON-ONE\jaden DEBUG WatcherFsNodeReader - FsWatcher. Event path:'d:\Firelight\hazmats\.plastic' type:Changed

 

Oh is this whats happening? I will try closing that window.

 

I think this might actually be a thing, I had unity freeze in this same way multiple times after editing two prefabs. And now i've edited like 10 with no issue.

I'm using 2021.3.14

 

It's of course up to preference, but anything 'in' unity is always going to be a buggy mess. I lost all faith with any built-in version control after collab.

I run Plastic SCM externally and find it a far more confident setup, so it's tracking changes without any reliance on the editor. Not to mention dealing with plastic scm UI in the editor just feels clunky.



This isn't a solution obviously as it doesn't fix the built-in plugin; just sharing my experience in using the external version solely, which has been pretty solid.

 

I'll try when i have time, so far I haven't had the tab up for the past few days and not a single freeze.

 

I reported this to our assigned ISS rep who brought this forward to the Plastic team, they were able to reproduce the bug and seem to have uploaded a silent fix (not mentioned in the changelog) with the latest version control package 2.0.1. It may have resolved this issue but I have not tested it extensively to make sure. However I have not experienced any freezes since updating it today.

 

Awesome! 2.0.1 doesn't seem to have appeared on my end yet, Unity 2021.3.14.