Notification tray icon issue w/ Indicator Sound Switcher about awesome HOT 5 CLOSED

How to reproduce the issue:
Run https://github.com/yktoo/indicator-sound-switcher

if it can't be reproduced with just AwesomeWM itself - it's not an AwesomeWM problem

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That's not sound logic though. Maybe multiple things are doing the wrong thing.

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then give the smallest possible code snippet how the problem could be reproduced on default config without installing any extensions

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oh, i've just relized it's not an awesomeWM widget (on the screenshot it looks like it):

then try it in another tray app - https://github.com/kolbusa/stalonetray - if it can be displayed there but not in AwesomeWM - then it's indeed might be a problem here

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also it could be potentially a dup of #2995

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