Hi, I just upgraded to Catalina (10.15.1) and have the latest TotalSpaces2 (v2.8.3).
The problem I’m having is that my 3rd/middle mouse button actives the overview grid, but then deactivates it. So it shows the grid for half a second and then closes it.
Keyboard shortcut and F10 assigned to my Contour Shuttle button works fine. My trackball has a 4th and 5th button, and they have the same effect. Tried both a Logitech trackball and Sanwa model.
Also, if I have the TotalSpaces2 preferences open, the middle button works fine. It’s only when other Apps are in focus that the problem happens.
I’ve made sure all the Privacy permissions are assigned for TotalSpaces and don’t see anything else that may be using the middle button.
I don’t have this problem on my work computer on Catalina, but I’m using MagicPrefs to do a three finger tap on my Magic Mouse to activate a key combination that TotalSpaces then uses to activate hte overview grid. I’ll have to try with a regular mouse tomorrow (yeah I have to work the day after Thanksgiving).