Hello
I think this bug is caused by the extension mozedit.
That was not easy to understand because at start the latency is too small to be viewable.
If I had time I'll post here the exact minimal code that cause this bug.
Celelibi
--
-----BEGIN GEEK CODE BLOCK-----
Version: 3.12
GS/M>O d-@>-- s: a--->? C++(+++)>$ UL++>++++$
P++(+)>++++$ L+++(++)>+++++$ E-?>++@ W+++>$
N?>++@ o?>+++++$ K->[EMAIL PROTECTED] !w>$ O? M- V? PS
PE Y+(++)>+++@ PGP+@>+++ t?>+@ 5? X+()R->+@
!tv>$ b(-) DI? !D>[EMAIL PROTECTED] G>+++@ e+>+++++
h!>*$ r-- y>$
------END GEEK CODE BLOCK------