On Sat, Aug 12, 2017 at 09:53:55AM +0100, Don Alex wrote:
> Can confirm. Initial rending of windows appear blank but when rolling mouse
> over it artifacts begin to be drawn. Makes Thunderbird unsable. However when
> running the official Mozilla build
> on the same system, no such errors occur. Suggest you compare the two builds
> and discover what has changed.
That's quite easy to compare, Mozilla is still using GCC-4.x in their
toolchain. Such issues are not happen for the first time while Debian
is changing the GCC suite.