@Andreas_Hegenberg When playing a youtube vid. in Show Floating WebView (html inserted). After closing the webview window (by cmd-w or red dot upper left corner). The youtube audio keeps playing. Is this expected behaviour?
I think you are right, there was a potential retain cycles (i.e. the webview not really being closed) with some configurations. Could you check whether 5.489 solves this for you? (uploading now)
unfortunately the crashlog was too generic to figure out what's wrong.
It's probably a specific combination of webview settings because I can't reproduce it here with the defaults. If you can share a sample webview I will probably be able to reproduce it.
Deleted the action Show Floating WebView: (null), restarted BetterTouchTool and added the action(default settings) and html again in the same keyb.trigger. Now it isn't crashing after double click (full screen resize works now). But audio keeps playing when closing the webview by cmd-w or red traffic light.