Bug 1301382

terminator-1.90-1.fc24 has been submitted as an update to Fedora 24. https://bodhi.fedoraproject.org/updates/FEDORA-2016-ec937ddb3c

terminator-1.90-1.fc25 has been submitted as an update to Fedora 25. https://bodhi.fedoraproject.org/updates/FEDORA-2016-082f9377fd

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This bug is still present in stock F25 and even the GTK3 branch of Terminator. I think it affects all GTK applications.

Here is a work around: open gnome-control-center, then go to the Details panel and changing the default application for Web. Note that xdg-open honors the default browser chosen in KDE because it reads ~/.config/mimeapps.list. Perhaps GTK could be fixed to do the same when Gnome isn't running?

if you agree that this is not a Terminator-specific bug, please reassign this to GTK (or file a new bug).

terminator-1.90-1.fc24 has been pushed to the Fedora 24 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-ec937ddb3c

terminator-1.90-1.fc25 has been pushed to the Fedora 25 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-082f9377fd

terminator-1.90-1.fc25 has been pushed to the Fedora 25 stable repository. If problems still persist, please make note of it in this bug report.

terminator-1.90-5.fc24 has been submitted as an update to Fedora 24. https://bodhi.fedoraproject.org/updates/FEDORA-2016-77620715b6

terminator-1.90-5.fc24 has been pushed to the Fedora 24 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-77620715b6

terminator-1.91-1.fc24 has been submitted as an update to Fedora 24. https://bodhi.fedoraproject.org/updates/FEDORA-2017-e906b78dcf

terminator-1.91-1.fc24 has been pushed to the Fedora 24 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2017-e906b78dcf

terminator-1.91-1.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.