[BUG] Entities package conflicts with Prefab editing

Reproducible with empty project + the Entities package.

• Unity 2019.1.3f1
  
• Windows 10
  
• Entities (p33, p32, p31, p30 and possibly earlier)

After installing the Entities package and enter&exit Playmode once, if you open any prefab with meshes, you'll find that the prefab editing scene will no longer show the meshes (or all meshes turn black). Clicking on GameObjects in Hierarchy also no longer select objects in Scene view.

I already filed a bug report. But am looking for possible workarounds. I'm guessing it has to do with the Entities package's scene conversion code.

Update: Bug confirmed and tracked by Unity on May 28th (https://issuetracker.unity3d.com/product/unity/issues/guid/1157434)

 

I have the similar, possibly the same problem for Unity 2019.3.13f1