Opera version 79.0.4143.60 fixes the disappearing from sidebar issue!

@tkossak In the answer to my bug report they said it's one and that they're working on it.

@njt145 The Opera team is aware of this problem and working on it (I made a bug report).
As you said, we'll have to wait for a fix from the dev team.

Incredibly good extensions, would absolutely recommend, just like other V7 extensions.

However in the current update (3.3.3) the sidebar icon disappears as soon as another tab is opened making the extensions basically useless. May be from the opera update though, but it still needs to be fixed.