Logitech MX mouse custom configured keys don't work after swithing back from different host

Bugs or Unexpected Behavior
1

Affected input device: Logi MX Master 3

Device information:

  • Type of Mac: laptop
  • macOS version: 13.6.6
  • BetterTouchTool version: 6.206

It seems most of the latest February 2026 versions have such bug: in 90% BTT does not recognize customized keys (especially “button 7” or “button 6”) after reconnection from different host.

For instance, one host is MacOs with BTT (host#1) and 2nd host is Win11 with Logi software (host#2). The issue occurs only after switching from Win11 host#2 to MacOs host#1.
BTT restart does help to return the mouse buttons recognizable in such case, but it’s not comfortable to restart BTT every time after switching the host.
Also the issue does not occur after switching in opposite direction: from MacOs (host#1) to Win11 (host#2), as the Logi software properly recognizes the host switch event.

Reverting to BTT 6.124 reduces such cases to 5-10%.

Please find attached 2 logs:

2

It looks like the issue somehow is related to “Logitech Keyboard Configuration” item.

Deleting it from BTT 6.206 configuration almost eliminates the issue (but not 100%).

Any idea about why this “Logitech Keyboard Configuration” item affects both the Logi Keyboard and MX Mouse custom keys recognition?

Logitech Keyboard Configuration
Logitech Keyboard Configuration1274×1690 136 KB