Linux Mint 19.3 Tricia - XFCE System.
Installed the latest version of FL Studio (20.6.2.1549) using the new FL20 CrossTie into a copy of my older working Win 7-32 bottle (allows me to migrate FL settings and to avoid having to re-install all my VST plugins). The new CrossTie adds some Windows components not previously installed (NET Framework, etc) and the completes without any errors. Runs well so far, but haven't done extensive testing. Minimizing windows works much better. You still need to choose 'Ignore' at the warning about "administrator mode."
The only bug I've noticed is when editing the names of tracks and other items: The backspace key fails to edit characters in the text field. Instead it closes FL Module windows in the background.