Masthead covers up the top of all panels after clicking into FastQC report section links

[jennaj]

Describe the bug Masthead covers up the top of all panels after drilling into FastQC report

• activity bar doesn't impact
• themes do not impact
• new in 23.1 pre-release

Galaxy Version and/or server at which you observed the bug Galaxy version 23.1.rc1, commit 15d0f17dc5559c410480489917365d96e3b8b40c

To Reproduce Steps to reproduce the behavior:

1. Go to a history with FastQC output
2. Click on the eye icon for webpage output
3. Click into a section of the report
4. Notice how the very top of the view in all panes is covered up by masthead

Expected behavior Retain full view. Other tools could be impacted I guess. Windowing problem?

Screenshots

Additional context Test history: https://usegalaxy.org/u/jen-galaxyproject/h/test-fastqc-webpage-download