ngraham added a comment.
That's exactly why manually setting the DPI isn't the correct way to enable high DPI mode. It only changes the fonts, so UI elements that aren't textual (like icon-only buttons, and icons in buttons) don't get scaled. You should use the scale factor slider in System Settings > Display and Monitor > Scale Display to enable high DPI mode. If there are bugs preventing this from working for you, please file them. Thanks! REPOSITORY R134 Discover Software Store REVISION DETAIL https://phabricator.kde.org/D21234 To: ngraham, #vdg, #discover_software_store, apol, ndavis Cc: zanny, filipf, ndavis, plasma-devel, jraleigh, GB_2, ragreen, Pitel, ZrenBot, himcesjf, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart