Catch torrent URLs with custom regular expressions not working

[Latonki]

I'm trying to create regular expressions so that Torrent Control will only catch the torrent URLs from specific trackers. I was able to create a regular expression and I ticked catch torrent URLs before inputting my regular expression into the textbox but the issue was that after I clicked save, closed the addon page, and then reopen the addon page, the regular expression disappeared.

[jimbobjonesbob]

same thing here.

[vasyl83]

same!, worked before I had to reinstall windows, once I got firefox back. I had that error on clean install of firefox and this addon

[KaiStarkk]

If the save button isn't becoming inactive after you click it, it isn't saving.
The issue is likely caused by a malformed regular expression. The test tool is more lenient than the checker that is used when saving.

You probably have something like this:
https://www.domain.net/tor/download.php/

and need to convert it to a regular expression like this:

/^https:\/\/www\.domain\.net\/tor\/download\.php\/.*$/

@Mika- not sure if the checker could bubble up the error message as an alert?

[Mika-]

Currently there's no warning about malformed regular expressions. Should really add one that atleast says which one is broken