I just tried, and I could reproduce the bug with Firefox 128 deb package on Ubuntu 20.04 and Firefox 128 snap package on Ubuntu 22.04, but Firefox 128 snap on Ubuntu 24.04 seems to render it correctly. Would you be able to verify this?
Since the issue happens on older Ubuntu releases but not the latest one, I'm inclined to think that it may be an issue with one of the lower level system libraries that Firefox interacts with. Still, it may be worth opening a bug report about this on Mozilla's tracker at https://bugzilla.mozilla.org as well. Would you please do that if not yet already, and provide the bug number here so I could add it to this bug's metadata? Thanks.
Hello, and sorry for the slow reply here.
I just tried, and I could reproduce the bug with Firefox 128 deb package on Ubuntu 20.04 and Firefox 128 snap package on Ubuntu 22.04, but Firefox 128 snap on Ubuntu 24.04 seems to render it correctly. Would you be able to verify this?
Since the issue happens on older Ubuntu releases but not the latest one, I'm inclined to think that it may be an issue with one of the lower level system libraries that Firefox interacts with. Still, it may be worth opening a bug report about this on Mozilla's tracker at https:/ /bugzilla. mozilla. org as well. Would you please do that if not yet already, and provide the bug number here so I could add it to this bug's metadata? Thanks.