DE: Bis das Update Hier veröffentlicht wird, nutzt bitte die aus dem Chrome Store da diese schon auf Version 1.5 ist:
EN: Until the update is released here, please use the one from the Chrome Store, as it is already on version 1.5:
https://chromewebstore.google.com/detail/gpt-fullscreen/pfcabgbhfnlheillnpjekhlihbdmkmgp

@vit7v: I created the update and it has been submitted to Opera for review. But it will probably take a while because even version 1.4 has not yet been tested. otherwise this extension is also available in the chrome store

Hello,
this is because GPT received an update recently and changed the CSS classes. This means that removing the old CSS classes no longer works. I'll try to find a way to fix this within the week or next.