<p>Looks like <a href="https://github.com/elextr" class="user-mention">@elextr</a> nailed it.  Window isn't "full screen" in the OS X sense, but it is "maximized" in the Windows sense (ALT/OPTION+green button), which is apparently close enough to full screen to default to tabs.  Setting the "merged windows" OS X setting to manual has resolved the issue.  This was a fresh install on a new machine, previous machine hadn't updated to 1.30, so I just assumed it was a 1.30 thing.  I'll close this out, as it's not a Geany issue.  I may see about pushing a bug upstream at some point (GTK?).</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/1428#issuecomment-288067519">view it on GitHub</a>, or <a href="https://github.com/notifications/unsubscribe-auth/ABDrJ95O_O6E-yvR51Tn8ONCqEET_P4iks5rn8argaJpZM4Mc-3N">mute the thread</a>.<img alt="" height="1" src="https://github.com/notifications/beacon/ABDrJzjV6eNTHy6Tko4uagwbUfulD187ks5rn8argaJpZM4Mc-3N.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/1428#issuecomment-288067519"></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":"PERSON","message":"@jrittenh in #1428: Looks like @elextr nailed it.  Window isn't \"full screen\" in the OS X sense, but it is \"maximized\" in the Windows sense (ALT/OPTION+green button), which is apparently close enough to full screen to default to tabs.  Setting the \"merged windows\" OS X setting to manual has resolved the issue.  This was a fresh install on a new machine, previous machine hadn't updated to 1.30, so I just assumed it was a 1.30 thing.  I'll close this out, as it's not a Geany issue.  I may see about pushing a bug upstream at some point (GTK?)."}],"action":{"name":"View Issue","url":"https://github.com/geany/geany/issues/1428#issuecomment-288067519"}}}</script>