Issue peek causes page content to collapse on window resize

[AbigailDawson]

If you resize the window while viewing the Issue peek, the content stays pushed to the side of the page when the window is resized.

Steps to replicate:

• hover over any issue and press Space to reveal Issue peek
• make window size smaller
• press Space to leave Issue peek
• make window size larger and notice content stays pushed to one side

_{Huly®: UBERF-6763}