Version: "Version 545 (1)" <-- as per the "About" screen.

macOS version: 10.15 (same issues on previous macOS version, 10.14.5)

On macOS, the launcher seems to kind of reset it self each time you open it. Every time I open the launcher is positions itself near the top left of the screen, even if I moved it to the middle of the screen. (Previous versions, the launcher kept its position after re-opening)

Also, it seems to not remember my last game profile that I played, ex: If I open it, the launcher is on 1.14.4, if I switch to 1.13.2, play the game (launcher closes obviously), when I re-open the launcher its forced again to the upper left of the screen, and the profile is set back to 1.14.4.

Here is a quick little video to showcase the issue a bit:

https://youtu.be/ksSQz_dtVRw