Arch Linux, Latest Godot3 master build (7088d9e)
Just compiled a fresh build from Godot3 master branch and I'm having some new weird issues, that may or may not be related to each other:
Steps to reproduce:
Edit:
The Project Manger only pops up when playing the project(F5). Playing the edited scene(F6) works as expected.
You need to rename your godot.cfg to <something>.godot, see #8375. Be sure to check the git log when you live on the edge, the master branch is a moving target ;)
hey. you are right. but this doesn't explain or solve the main issue (project manager popping up when playing the project) which happens with newly created projects, too.
just in case my explanation wasn't good enough, I've made a gif of what i mean.

Oops :) Probably still a consequence of #8375, the play function might still expect a godot.cfg.
Damn this was quick, keep it up you awesome people :-)
Most helpful comment
Damn this was quick, keep it up you awesome people :-)