KDE - Some windows lack titlebar colour/qube name

[unman]

Qubes OS version:

R3.2

Affected component(s):

Desktop KDE

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Steps to reproduce the behavior:

Open an application

Expected behavior:

Window titlebar will show qube name, and appropriate colour

Actual behavior:

The application icon is coloured appropriately, but (particularly for disposableVMs) no qube name is shown.
In some cases the name appears.

General notes:

Relevant: #2968

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Related issues:

[andrewdavidwong]

This issue is being closed because:

• This issue has the "Release 3.2 updates" milestone.
• Qubes OS 3.2 recently reached end-of-life (EOL).
• This issue has not been updated in over a year.

If anyone believes that this issue should be reopened, please let us know in a comment here.