Forum Discussion
If it's not on that patches page, then you can contact Support directly and they can help you:
Seems that reaching out to support was needed... and their page with supported versions of Firefox is outdated as well.
@Support wrote:Upon further investigation, the latest Firefox ESR version we support is FF 52.8.0. I would try this version as you've suggested.
52.8.0 ESR is supported, but not documented yet... or maybe it is.
The support rep pointed me to this page: http://downloads.smartbear.com/testcomplete/browser-patches/firefox/tc_12_50_4142_FF60_patch_Installation_Notes.htm
It claims, "Now, you can run TestComplete and test web pages shown in Mozilla Firefox versions 52.8.0 and 60.0.1."
But there's no mention of ESR on that page... so I'm still stuck with a "try it and see" answer.