<p>With Geany 1.33 built against GTK+ 3, probably any theme but at least with Adwaita, Adwaita Dark, Arc and Arc Darker, Scintilla's internal horizontal scrollbar trough keeps flashing off then on, almost as if its adjustment is being re-calculated or something.</p>
<p>I cannot figure out what triggers it, it seems to be pretty random. I tried to capture it with screen capture software but it didn't show up, likely due to the way screen capture on X works. I think I'd have to use my cell phone to record my monitor to capture it.</p>
<p>It's not a huge deal but it's distracting since in my DE I have the panel on the bottom and the window buttons for each app will blink when they need your attention. The scrollbar flashing has the same effect of grabbing my attention if I'm not focusing my vision on it.</p>
<p>I don't remember ever seeing this with GTK+ 2 build, but it might've just been so fast as to not be visible or something.</p>

<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">—<br />You are receiving this because you are subscribed to this thread.<br />Reply to this email directly, <a href="https://github.com/geany/geany/issues/1717">view it on GitHub</a>, or <a href="https://github.com/notifications/unsubscribe-auth/ABDrJ63dLsbeeQun5WmIiYJIzQaeqHfPks5tAYa4gaJpZM4RCoVn">mute the thread</a>.<img alt="" height="1" src="https://github.com/notifications/beacon/ABDrJ_2b_X4DGATwJobsSX6FG9JXMOFfks5tAYa4gaJpZM4RCoVn.gif" width="1" /></p>
<div itemscope itemtype="http://schema.org/EmailMessage">
<div itemprop="action" itemscope itemtype="http://schema.org/ViewAction">
  <link itemprop="url" href="https://github.com/geany/geany/issues/1717"></link>
  <meta itemprop="name" content="View Issue"></meta>
</div>
<meta itemprop="description" content="View this Issue on GitHub"></meta>
</div>

<script type="application/json" data-scope="inboxmarkup">{"api_version":"1.0","publisher":{"api_key":"05dde50f1d1a384dd78767c55493e4bb","name":"GitHub"},"entity":{"external_key":"github/geany/geany","title":"geany/geany","subtitle":"GitHub repository","main_image_url":"https://cloud.githubusercontent.com/assets/143418/17495839/a5054eac-5d88-11e6-95fc-7290892c7bb5.png","avatar_image_url":"https://cloud.githubusercontent.com/assets/143418/15842166/7c72db34-2c0b-11e6-9aed-b52498112777.png","action":{"name":"Open in GitHub","url":"https://github.com/geany/geany"}},"updates":{"snippets":[{"icon":"DESCRIPTION","message":"Horizontal scrollbar flashing (#1717)"}],"action":{"name":"View Issue","url":"https://github.com/geany/geany/issues/1717"}}}</script>