Broken style on core.trac page

[krishaweb]

Found broken style issue in the core.trac when checking the latest tickets.

Ref: ​https://tinyurl.com/yb59bmft

[dd32]

This was mostly fixed by [11464], but took a while for it to be reflected upon trac as it doesn't reload it's templates that often.

There's still an issue in that the JS overlay needs to be updated to detect the new header height.

Since it's Javascript, we should probably update the code to position it properly, rather than relying upon magic numbers in CSS.

[dd32]

Replying to dd32:

There's still an issue in that the JS overlay needs to be updated to detect the new header height.

Fixed via #6070 & [11502].

Since it's Javascript, we should probably update the code to position it properly, rather than relying upon magic numbers in CSS.

Next commit, which also fixes mobile views with a width < 770px.

[dd32]

In 11540:

Trac: Calculate the correct Core Ticket popover position via Javascript upon opening the popover.

Thix fixes the positioning for mobile views (<770px) and ensures that future header changes don't need the CSS updating.

Fixes #6038.