[Bug] Unity 2018.3.6 is still broken even after fixing a similar bug

This bug needs urgent attention. 2018.3.x series is still unusable!

Bug report: https://fogbugz.unity3d.com/default.asp?1127913_q1qkru2jjcojc707
Issue tracker: QA team didn't think this is a separate bug and they gave me the issue tracker link for the previous bug even thou my repro steps are different https://issuetracker.unity3d.com/is...-objects-in-the-scene-when-saving-the-project

Very similar bug (fixed in 2018.3.6): https://forum.unity.com/threads/bug...but-something-got-broken.627805/#post-4206169

Unity 2018.3.6 is still broken even after fixing a similar bug.

It seems like the related bug is fixed on 2018.3.6 but I still see very similar problem. See the video and description below.
Related bug: https://fogbugz.unity3d.com/default.asp?1126037_01k7qoofcod4ufk9

1) Backup these files to a separate folder. We will compare them later.
Assets/Development/PurpleWindowFrame.prefab
Assets\Commons\Atesh\WindowsAndWidgets\DefaultWindowFrame.prefab
2) Open this project in 2018.3.6.
3) Open the scene in "Development" folder.
4) Build the project as exe (No need to run it)
5) Click the "save project" option in file menu.
6) See that some scene objects disappear.
7) Compare the files listed in step 1 with the backup versions of them.
8) See that the component IDs in the prefab asset files are regenerated by Unity. Some links between prefabs got broken in the process.

Video: https://drive.google.com/open?id=1UtpXy5qshpthJkpGZAkf2L7Cl18KyMem

 

I'm experiencing this exact issue. It's driving me nuts.

 

Broken is broken. Unity tech has been releasing broken versions for a long long time but this one looks like they were in a big hurry to release nested prefabs before the year ends.

 

I am experiencing something similar which i think might be related:

https://forum.unity.com/threads/pre...new-loading-bars-and-lag.635626/#post-4291774

 

I checked the other thread. WOW! Broken so bad.

 

Same here. Certain prefab references go blank seemingly randomly. Causing major headaches for everyone.

 

This is fixed in 2018.3.8.