I'm having an issue getting popups to resize at all. I can change the width, but I get a scrollbar instantly that makes the height 90% of the page:

..and if I then try to resize the height of the popup, it ignores me except to move the scrollbar further in:

Here's my XML:
<skuidpage unsavedchangeswarning="yes" personalizationmode="server" showsidebar="true" useviewportmeta="true" showheader="true">
<models/>
<components>
<pagetitle uniqueid="sk-34oC-235">
<maintitle>
<template>{{Name}}</template>
</maintitle>
<subtitle>
<template>{{Model.label}}</template>
</subtitle>
<actions>
<action type="popup" label="New Button" uniqueid="sk-34oD-240">
<popup title="New Popup" width="10%">
<components>
<richtext multiple="false" uniqueid="sk-34oF-252">
<contents><p><strong>WORDS</strong></p>
</contents>
</richtext>
</components>
<afterclose/>
</popup>
<hotkeys/>
<renderconditions logictype="and"/>
<enableconditions/>
</action>
</actions>
</pagetitle>
</components>
<resources>
<labels/>
<javascript/>
<css/>
<actionsequences/>
</resources>
<styles>
<styleitem type="background" bgtype="none"/>
</styles>
<interactions/>
</skuidpage>
I'm even using the "Default" theme that I haven't touched. Any ideas what might be the issue? I tried with both the latest version of Firefox (62.0) and a newer version of Chrome (68.0.3440.106) and both behave very similarly.
Thanks!

..and if I then try to resize the height of the popup, it ignores me except to move the scrollbar further in:

Here's my XML:
<skuidpage unsavedchangeswarning="yes" personalizationmode="server" showsidebar="true" useviewportmeta="true" showheader="true">
<models/>
<components>
<pagetitle uniqueid="sk-34oC-235">
<maintitle>
<template>{{Name}}</template>
</maintitle>
<subtitle>
<template>{{Model.label}}</template>
</subtitle>
<actions>
<action type="popup" label="New Button" uniqueid="sk-34oD-240">
<popup title="New Popup" width="10%">
<components>
<richtext multiple="false" uniqueid="sk-34oF-252">
<contents><p><strong>WORDS</strong></p>
</contents>
</richtext>
</components>
<afterclose/>
</popup>
<hotkeys/>
<renderconditions logictype="and"/>
<enableconditions/>
</action>
</actions>
</pagetitle>
</components>
<resources>
<labels/>
<javascript/>
<css/>
<actionsequences/>
</resources>
<styles>
<styleitem type="background" bgtype="none"/>
</styles>
<interactions/>
</skuidpage>
I'm even using the "Default" theme that I haven't touched. Any ideas what might be the issue? I tried with both the latest version of Firefox (62.0) and a newer version of Chrome (68.0.3440.106) and both behave very similarly.
Thanks!
Korey