I like the feedback submission through the launcher. However, when I start the game normally the launcher closes automatically. One method to have the launcher remain open while the game is running is to launch the game through steam which will start the launcher, but do not then play the game from the launcher. Instead, start the game from the executable in the steam directory: Steam\steamapps\common\Kerbal Space Program 2\KSP2_x64.exe. Now I can submit feedback through the launcher while playing the game.
Please let me know if there's an easier way.
(I tried starting the launcher executable directly but none of the executables in AppData\Local\PD Launcher\ seem to do the trick)