The magnet link is correctly set with
xdg-mime to open in
transmission, and also in
transmission is NOT running, everything works as expected (click a magnet link or torrent file, and it opens).
transmission is running, clicking on a magnet link in chrome will open a second transmission window.
This does not occur neither in firefox nor with the command
xdg-open "magnet-link". The problems seems to be only in chrome.
Debian buster with 4.19.0-2-amd64, fully upgraded. transmission-gtk 2.94 (d8e60ee44f) google chrome Version 72.0.3626.81 (Official Build) (64-bit) xdg-open 1.1.3 awesome WM v4.3
edit: Checking chrome's log, I can see this related line
[21407:21407:0207/152959.142127:VERBOSE1:navigator_impl.cc(111)] Failed Provisional Load: magnet:?xt=urn:btih:<magnet_url_with_trackers-hidden_for_privacy>, error_code: -3, error_description: The webpage at <strong jscontent="failedUrl"></strong> might be temporarily down or it may have moved permanently to a new web address., showing_repost_interstitial: 0, frame_id: 4