Side-panel and filter panel don't behave well together

[rob-sve]

Summary
Opening both the side-panel and the filter panel at the same time can cause them to misbehave and push each other's widgets up/down in an attempt to fit everything. This only makes widgets overlap, and even go outside the screen dimensions. It seems to mostly be the side-panel that pushes the filter panel down, while also having its widgets overlap the cover image a bit etc.
This only applies when the screen size is smaller than the contents of the panels. So it happens consistently on my old laptop's 1280x800 screen but not at all on a 1920x1080 screen.

Expected result
Ideally the filter panel should have priority over the side-panel, and draw over the contents of the side-panel without shrinking it.

Repro steps
0. Set a lower screen resolution.

1. Go into one of the table tabs, such as the one for Games.
2. Double click an entry to open the side panel.
3. Now click on the Filter button on the bottom right to open the filter panel.
4. Notice how the filter panel contents can't fit on the screen, and the side-panel contents overlap the cover image, while both panels are opened.

Notes
Screen shot has been attached. In the screenshot, the side panel's labels are overlapping the cover image, and the search bar under the filter panel is not visible.