[Transponder69]

Question: If I switch to Estuary skin and switch back to transparency, do I loose some Transparency settings?
(If I don't loose my settings, I will test it with Estuary by myself and report at the right place.)

Skin settings are saved with each skin so you should not lose any skin settings.

Thank you Milhouse, in the future I will first switch to default skin, test again and report then.
I have asked Ronie to fix the invisible seektime label in Transparency.