setenv XPCOM_MEM_BLOAT_LOG 1 script apprunner -edit (typed a few characters, did Debug->Output HTML, then quit) ^D (to end the script) The editor leaks 6 nsDOMSelections.
setting to M13
I believe this is fixed (was due to YA webshell leakage), but I'll make another run and confirm that.
Confirmed: this is fixed now.
verified in 12/3 build.