It came out more as a complaint than questions. Anyway can internal pages have status "complete" on browser start?
Can internal pages have tab.favIconUrl undefined instead of url to unaccessible theme resource?
And lastly I hope soon the media icon API will be available.
I completely forgot about this thread. This is not needed anymore because since opera version 32, when I call chrome.windows.getCurrent from a sidebar, it finally gives me current windowId instead of Id from active window. I always wondered why it always gave me the wrong Id, that's why i asked for this feature from sidebar's API, but it must have been a bug.
So it's solved and thread can be closed
Until Opera improves bookmarks I'm switching to another browser. Slimjet, that name sounds stupid but hey, they have bookmarks sidebar and standard chromium bookmarks manager. I will check from time to time if Opera changes, but that's it for now