D28180: [applets/systemtray] Hide/show expander arrow - regression fix

[Nathaniel Graham]

ngraham added a comment.


  This works, but I wonder if there's a conceptually cleaner way to do it. Not that I know of one, so I'll wait for a #plasma <https://phabricator.kde.org/tag/plasma/> person to comment.
  
  Oh and thanks for the code comments. Always very helpful!

REPOSITORY
  R120 Plasma Workspace

REVISION DETAIL
  https://phabricator.kde.org/D28180

To: kmaterka, #plasma_workspaces, #plasma, ngraham, broulik, davidedmundson
Cc: plasma-devel, Orage, LeGast00n, The-Feren-OS-Dev, cblack, jraleigh, zachus, fbampaloukas, GB_2, ragreen, ZrenBot, ngraham, himcesjf, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, ahiemstra, mart
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