Bug?: Ripple Overwrite Button is Active, Menu Entry is Not

I'm new to DR and running linux with Version 17.0B Build 18.

The sometimes, the Ripple Overwrite button on the cut page is active, but the menu entry is not. The shortcut Shift+F10 doesn't work as well in that situation.
When clicking on the Ripple Overwrite button DR executes the action expected.

Known bug? Is there another/better way to report possible bugs?

There's actually a new forum for version 17 that we're supposed to use.

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