When using a tracker over https KTorrent 3.x.x asked about accept invalid certificates and you could decline, accept for the actual report or accept always. KTorrent 4.0.2 doesn't ask about it and returns tracker did an invalid response.

¿Could be readded the feature to accept invalid certificates?

Is "Do not use KIO for tracker announces" in the advanced settings enabled ?

Yes it was, seems to be enabled by default in Fedora. Now the dialog appears but doesn't show accept always button. Accepting the certificate do it always or it ask per announce or program execution? If is not always I suppouse it could be acepted always by visiting the url in konqueror and in it accept always.

Edit: I did say nothing I have seen is asked after chosing accept.

Our alternate announce method, doesn't handle SSL problems at the moment, something I'm going to fix.

That's great, thanks.