3 ms·Hmm, old version maybe? I can't reproduce this on Firefox 68 or 69 on macOS.by modeless 7y agoHmm, old version maybe? I can't reproduce this on Firefox 68 or 69 on macOS.slater 7y agoFirefox 69, macOS 10.14.6 ️modeless 7y agoStrange. Perhaps an installed extension? Anyway, I catch this error now so it shouldn't interrupt your use of the site (except that notifications won't work).