Latest BetterTouchTool not working with Karabiner-Elements again

Hi! i'm setting up new macbook 16" 2019 with latest Catalina 10.15.5 (19F101)
i've noticed that once Karabiner Elements are turned on, my bettertouchtool shortcuts are not working.
BTT version: 3.389 (also tried alpha version with restart)
Karabiner Elements version: 12.9.0

affected input device: built-in keyboard only

when i kill Karabiner Elements - then BetterTouchTool starts working fine, i mean the following:
i've created combination Cmd+F12 to increase volume, so it increases volume when Karabiner Elements are turned off.

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