timeline window is way too wide

[claudeha]

Describe the bug
xwininfo reports that the timeline window (opened by right click on time slider) is 15575x336, requiring many screen-widths of dragging to access the controls to close it on the right.

To Reproduce
Steps to reproduce the behavior:

1. Right click on time slider
2. See error: window is very wide

Expected behavior
Window to be a reasonable size for the screen (my laptop is 1366x768).

Desktop (please complete the following information):

• OS: Debian Buster with XFCE desktop/window manager
• GPU: NVIDIA G105M
• Driver: Vendor: NVIDIA Corporation / Renderer: GeForce G 105M/PCIe/SSE2 / GL Driver: 3.3.0 NVIDIA 340.108

Additional context
(In XFCE, at least with my current theme, you can click the window icon top left, which is on the screen, to access menu items like maximize and close, so it's not a total disaster.)

[claudeha]

Oh, it seems related to animation length: reducing it from 205 seconds to 20 seconds and the window size is more reasonable (1700px wide).

[3Dickulus]

on my desktop the window never gets larger than (current) screen width, it does jump to the largest monitor (of 2) and sets width == monitor width but has never exceeded that.

edit: this is a WIP