Issue details and issue details popup (in board view) have a right side bar which contains custom fields.

If the field name and/or field value is long and does not have any space in it the layout is broken. For example the cogwheel right of the field value isn't reachable anymore.

Somehow the CSS / HTML should make sure that columns have a max width and that everything fits into the 296px (360px of side bar minus left/right padding) regardless of text length used and even if no space is present in the text. The layout should force a word break and display multiple lines.

I have an installation with german field names and values and because german uses compound nouns it is relatively easy to have some longer words without space in it as field names and/or values.