I'm using the file attached.
When opening on Official release I can add the Decimate modifier and configure it as "Planer" with any angle I want.
When I open it on versions 53087 and 53095 and 53114 it crash when I try to configure it as "Planer". (the 53087 crash after a while but the other crashed very quicly)

also when I opened this file on version 53114 and try to zoom with the mouse wheel or using the numpad1/3/7 etc the view got very weird zoom so I can't use the zoom any more, I can only rotate with the mouse wheel.

It's not occur when you use the default cube in all versions.

I also try to Append only the mesh from the file and add the modifier on it but Blender crash again.

I tried this with another file and got the same issues.