Control: tags -1 help

Thanks.

The lines you have highlighted[1] were added upstream in version 1.4.1. I know
Rob has had health issues and is no longer active.

I have no means to check the wider effects of this change.
We need some help to test what they might be.

Mark

[1] https://git.devuan.org/devuan/slim/src/branch/suites/unstable/panel.cpp#L957