<p></p>
<p>From the various issues on spellcheck it seems that Scintilla has a problem drawing indicators on damaged or zero width characters.</p>
<p>The fact that <a class="user-mention" data-hovercard-type="user" data-hovercard-url="/users/eht16/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/eht16">@eht16</a> can't reproduce suggests its also font and/or Pango version dependent.  <a class="user-mention" data-hovercard-type="user" data-hovercard-url="/users/hroncok/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/hroncok">@hroncok</a> as I keep saying, post the version of GTK and Glib and OS and version (see top of help->debug messages) and also the font and size you use, and <a class="user-mention" data-hovercard-type="user" data-hovercard-url="/users/eht16/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/eht16">@eht16</a> too :)  <a class="user-mention" data-hovercard-type="user" data-hovercard-url="/users/hroncok/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/hroncok">@hroncok</a> can you try different fonts and sizes?</p>
<p>Maybe it needs to be pushed upstream, but since this is the no longer supported Scintilla 3 the answer is likely to be try Scintilla 4?</p>

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