I see no issues with the update(*) and am very glad by the keyboard layout indicator on XFCE. (Also manually enabled system sound and feedback.) Thank you 🙂
P.S. Thank you for taking a consideratably and careful care of the security issue(s). It's appreciated.
(*) I have some difference with how FF handles CTL/BiDi on this XFCE install compared to previous other DE's, which affects learning on a local site, but that's from before the update and unsure what the cause/nature of it. I am aware the XFCE is in beta and as said the difference could be due to something I did or "didn't".
Update on the firefox localization/CTL/BiDi issue on a local site: after some trial and error, replaced fonts to the local version for my local language. This seemed to work.