WebP image variations never deleted

[skeltern]

WebP image support is great and works fine. But once created I've issues to get rid of all API generated WebP variations.

The backend image field variations "Delete" works and I can remove all variations JPEG plus WebP. Image list is clean but all WebP API variations are still stored in file system (for instance files/12345/84.900x675.webp etc). I can only use ImageSizer with temp 'force' option to request fresh WebP variations or have to delete WebP files from folders. No other way so far. Tested with 2 sites and latest master PW 3.0.165.

Is there somewhere a "magic button" or config/setup thing to solve my sticky WebP issue?

[Didjee]

@skeltern I think this solution of @horst solves your issue.