<p>Hmmm, I am now using a different (slower) machine to the one where I reported <a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="121917622" data-permission-text="Issue title is private" data-url="https://github.com/geany/geany/issues/807" href="https://github.com/geany/geany/issues/807">#807</a> and don't see it much at all, just very occasionally.</p>
<p>Given the variation of circumstances where some form of delayed or otherwise poor screen updating is seen (Linux and Windows, various versions of GTK, and slightly different manifestations) the only common item is Scintilla.  Perhaps there is some variability in the order that the various update signals from GTK get to Scintilla and that is exposing a dependency on the order of things in Scintilla.</p>
<p>Or perhaps there is a race where as machines get faster signals happen faster and the race is lost (an update is missed) more often.</p>

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