Details panel linger after download and switch to modeling

[joepal1976]

Steps to reproduce:

• Pick an asset in the list
• Click "details"
• Click "download" while still being in details mode
• Click the "modeling" tab

The details panel will still be visible. Expected is that it should be hidden when switching to the modeling panel, so that one can see the character instead.

Clicking away from the asset downloader when in table mode works as intended.

[Aranuvir]

Cannot reproduce. Perhaps add an onHide() doing some cleanup actions?