I've been using Opera since around ver.22, and it's always used the native toolkit -- QT4, I run Arch Linux w/KDE (Plasma 5). After the most recent update, the toolkit used by opera seems to have changed to gtk3. This bugs the crap out of me, b/c when I download, I'm forced to use the gtk3 file manager, which pales horribly in comparison to QT4's (Dolphin). Is this something I can control? More importantly, why did it even change?

Was able to resolve this by following this post: https://forums.opera.com/topic/11041/vines-don-t-work/3

The only difference being, I'm on Arch Linux, and so my package name was different (from the AUR, aur/opera-ffmpeg-codecs).

Awesome, thanks for this. It does NOT work for MP3. Possible solutions? Might I be missing a library or something?

I can't seem to play anything from Soundcloud.com within Opera (even with extensions disabled), though with Chrome and Firefox, Soundcloud works fine. I've tried disabling 'encrypted media extensions' in opera://flags, but to no avail. Oddly enough, soundcloud isn't the only flash-based player I have trouble with, and this seems to have happened sometime around Opera 28-30. Has anyone else seen this issue? Hate having to pull up another browser to get basic functionality out of a website (though, used to it, being a previous Presto-Opera user)

Having the same issue (with similar pages that use Flash). Glad I'm not the only one. It seems to have happened after the latest update (or the one prior to that).

Thanks a lot l33t4opera. The issue was actually on my end (doh!). I had let my cert StartCom SSL cert expire. Heh, but at least this also gave me the time to harden my Cipher settings on the server as well as update with a new cert Wouldn't even have thought to look had you not given the above link and which caused me to take a look at the cert details, haha. Thanks again man.

I'm having an issue with sites that use a self-signed SSL certificate. Namely, my webmail -- I use Roundcube as a front-end to a personal mail server that I run.

This used to not be an issue, so this must've happened with a recent update. I have the flag "#remember-cert-error-decisions" set to one month in opera://flags, and this used to work perfectly. However, now, every 5 mins or so I need to "re-accept" the self-signed cert, as I'm prompted with the "Invalid Certificate" pop-up. Is this by design? I recall Chromium recently making some changes to the way it handles self-signed certs, if I'm not mistaken.

Thanks for any insight guys.

etchoom YOU ARE THE MAN!!!!!!!!!!! Thank you for posting that. I had no idea that even existed!!

Glad to hear this is corrected in v29. Since I'm using stable, I'll have to wait until then to have the benefit of remembered window-size -- only a minor inconvenience really, but one I'd love to see corrected. I do have "Continue where I left off" selected, FWIW.

Awesome, thanks so much. I knew I'd done it before, but I couldn't remember how, and I was finding much via searching. Thanks again!