Document that polygons must have a fill for full hit detection #16698

[m-mohr]

Document that polygons must have a fill if pixels inside the polygon should be hit detected

See #16698 and #7750 for details.

[github-actions]

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[mike-000]

That also applies to RegularShape and Text (fill and backgroundFill) styling. As with polygons you will find it mentioned in upgrade notes, but that is also not in the main documentation.

[m-mohr]

Hmm... so maybe like this?

For polygons, text and regular shapes without a (background) fill, only the stroke will be used for hit detection.
Such features must have a fill applied to ensure that pixels within the fill are considered for detection.
The fill can be transparent.

[jahow]

Looking good, thanks @m-mohr!

edit: I think the description is good as it is, it conveys the idea that there is a different between no fill and transparent fill in a concise way