Feedback Unity 2019.2.7f2 - Compiles every time exit Play

Hello,

Getting this problem every time I exit play - Unity 2019.2.7f2 seems to be recompiling my code, even if I haven't touched any code files. The progress spinner (bottom right) spins and editor locks up, same as doing a normal code recompile.

Anyone else having this issue? Bit of a pain for the workflow.. ironic considering this release is supposed to be faster with multi-scene setups.

// WildStyle

 

Also started to randomly see scenes marked as dirty / need saving, even when I haven't touched anything.

And having to do a double save sometimes.. hit the save button it saves, but the scene still has the asterisk, save again and then it's gone.

// WildStyle

 

So no-one else has experienced this before? I'm wondering what's gone wrong to make this happen all the time.. as nothing has changed in my project apart from the Unity upgrade.

I've checked all preferences and don't see a way to stop the recompile happening every time.

// WildStyle

 

Perhaps related to the "Script Changes While Playing" setting in the Preferences window? It should only compile if script changes were detected though, but perhaps that option is somehow part of the problem.



Perhaps an AssetPostprocessor or another tool that runs on scripts and triggers a recompile?

I've seen this too (2018.4.4f1), mostly when working in the PrefabStage with uGUI. I haven't figured out why this happens, I believe it's related to UI layout Components.

 

Thanks guys - I'll check further and file a bug report later today.

// WildStyle

 

Thanks -- agree that it seems UI related. First saw this problem after integrating TextMesh Pro so that's the main suspect for me right now.

However, am now seeing other scenes randomly go dirty too, which is new.

// WildStyle

 

• Rolled back to Unity 2019.2.6f1 and it's fine again now.
• Also tested Unity 2019.2.8f1 had the same issue.
• Tested with only one scene open and get the same behavior.
• Still trying to track it down, then will report a bug.

// WildStyle

 

Still haven't found the root cause for this.. tested with Unity 2019.2.12f1 last night and got the same issue.

My main project is huge so it's pretty difficult to find the culprit. I'm using source control (Git), and even though the scripts seem to recompile every time I leave play, nothing is marked as changed in Git. So it's difficult to know where the problem originates.

Not sure if you guys know another way, to find out what is triggering the recompile every time?

// WildStyle

 

You could try looking from the Editor.log (Open from Console window context menu).
You should see

Starting compile Library/ScriptAssemblies/Assembly-CSharp.dll

and a few lines before that should be lines similar to

Updating Assets/Scripts/SomeScript.cs

which may show which files caused the recompilation

 

Thanks @villevli -- I'll give this a try!

// WildStyle

 

That helped me find the cause, thanks much for the pointer!

Turns out the issue was not a script changing at all, however an asset was updating the Scripting Define Symbols and that was causing the recompile every time I left play.

// WildStyle