Currently in Windows, but let me boot Tumbleweed. Post a screenshot of what your seeing so that we can compare.

Try running Firefox in Safe Mode.

I'm seeing issue in Windows and it looks like Ghostery is causing the issue. Let me test with Ghostery off.

Had to turn off Ghostery and Adblock Plus for the site to work in Windows. see screenshot

You may need to look at ETP, the shield icon in the address bar. Going to Tumbleweed now...

Same for me on Tumbleweed. see screenshot Turning off the the same add-ons resolved the issue.

Operating System: openSUSE Tumbleweed 20240130 KDE Plasma Version: 5.27.10 KDE Frameworks Version: 5.114.0 Qt Version: 5.15.12 Kernel Version: 6.7.2-1-default (64-bit) Graphics Platform: X11 Processors: 8 × Intel® Xeon® CPU E3-1535M v6 @ 3.10GHz Memory: 62.2 GiB of RAM Graphics Processor: Mesa Intel® HD Graphics P630 Manufacturer: HP Product Name: HP ZBook 17 G4

Try clearing site cookies and disabling Tracking Protection for the site.

Does it still happen in Troubleshoot Mode?

To everyone who helped:

I ended up turning off every extension, plus disabling Firefox's tracking protection before the page would load properly. It's the first time ever for me this has happened.

@zeroknight Didn't try troubleshoot mode as the page eventually loaded properly with everything turned off. When I originally posted the question I had turned off most extensions but had not turned off FF's tracking protection.

The VERY strange thing is that Firefox 122 running under Debian in another partition loads the page fine with several of the same extensions enabled. Bizarre. Perhaps OpenSUSE's version of Firefox is different ??

You can test in a new profile to rule out custom settings.

You can test in a new profile to rule out custom settings.

Good idea. Next time :)