firefox-esr 128.8.0 on a new install of 7.6.amd64 is non-functional for me  (no UI input or browsing possible), with dozens of the error below per second when run from a terminal.

Removing it and adding firefox 136.0.2 put things back to normal.

Can anyone else confirm this?

...
[Parent 88094, IPC I/O Parent] WARNING: process 66515 exited with status 127: file /build/tmp/pobj/firefox-esr-128.8.0/firefox-128.8.0/ipc/chromium/src/base/process_util_posix.cc:382
[Parent 88094, IPC I/O Parent] WARNING: process 60360 exited with status 127: file /build/tmp/pobj/firefox-esr-128.8.0/firefox-128.8.0/ipc/chromium/src/base/process_util_posix.cc:382
...

-- 
Chris Billington