Dragging the resize handle of a Live Data column leads to a jump in size

Steps to reproduce:

1. Open the wiki index.
2. Drag the resize handle between any two columns a tiny bit

Expected result:

The column size changes a tiny bit. The mouse pointer is still on top of the resize handle.

Actual result:

The two columns next to the resize handle jump to a size that is much larger than the other columns. The mouse pointer is no longer on top of the resize handle.

Note that this effect is less pronounced when the Live Data is "full", i.e., when the table barely fits the screen width or even exceeds it.