There is an updated pull request by sgn against master on the void-packages repository

https://github.com/mobinmob/void-packages xfce4-panel
https://github.com/void-linux/void-packages/pull/46500

xfce4-panel: update to 4.18.5.
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#### Testing the changes
- I tested the changes in this PR: **briefly**

@sgn 
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A patch file from https://github.com/void-linux/void-packages/pull/46500.patch is attached