[Bug 55500] [sna gen4] corrupt rendering (and flickering on redraw)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=55500

--- Comment #105 from sergio.callegari at gmail.com ---
Created attachment 82227
  --> https://bugs.freedesktop.org/attachment.cgi?id=82227&action=edit
Snapshot on the issue on characters

I have finally succeeded in taking a snapshot of the (very frequent) issue that
I have with individual characters while editing text. This is from emacs.

The issue may look localized and very minor, but being on text it is in fact
extremely distracting and annoying.

Just while editing this last sentence, it happened five or six times: entering
a character makes another character somewhere else get corrupted (and stay so
until another character is pressed, or the cursor is moved, or the text is
scrolled out and back in). The weird thing is that entering a character here
may cause a character corruption in some completely different place. And this
is exactly the reason why it is absolutely a killer to productivity. It takes
the eye away from where you are working.

Furthermore, the issue seems to be much more frequent if I type normally, than
if, on purpose, I carefully and slowly enter characters one by one.

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