Now tested!

Had to use a nbsp to stop "Series ID" wrapping and ruining the header alignment.

I'm torn on whether the column should just be called "ID" and let its position clarifywhat ID it refers to.

Maybe the ID column should just be removed, and the button inline with the patch or series name?

I wonder if, rather than adding another column, we could add the<button> in the existing series column, before the subject? Every bit as clickable but we avoid adding yet more columns to the rather large table.

Done.

Would it be sensible to merge the "Patch ID" and "Patch" columns too?

The good thing about two columns is it forces the alignment...

Polite ping