Not sure if I am supposed to make crash reports on versions that have not been officially released. But I got a crash when I added the drill head onto the drill inside the engineer's workbench. This only occurs when I load quark with IE on single or multiplayer.

Crash log:
https://pastebin.com/JAYaj5uk

Modlist:
forge-1.14.4-28.2.16
ImmersiveEngineering-0.14-97
AutoRegLib-1.4-35
Quark-r2.0-212

Reporting crashes on unreleased versions is usually fine, but you should include the exact version (git commit hash). If you download your builds here the hash will be automatically included in the version number. Alternatively you can define the environment variable ie_add_git_rev while building IE for the same effect (under Linux you just run ie_add_git_rev=1 ./gradlew build, I'm not sure how you'd do it under Windows).