thunar-4.19.3: The first right-click on a file in a new window shows an incomplete context menu

Using thunar-4.19.3, I observe the following misbehaviour.

Steps to reproduce:

1. Open new thunar window.
2. Click on a file with the right mouse button to open a context menu.

Expected results: The complete context window for the file is shown.

Actual results: Only part of the entries appear (an entry "Paste", a section with custom shortcuts, and an entry "Properties"). No trash, open with, etc.

Further observations:

1. Opening a new window, clicking left button on a file, then clicking right button works as expected.
2. Opening a new window, clicking right button on a file, clicking right button to deselect, clicking right button again works as expected.
3. Opening a new window, clicking right button on the folder itself (background not icon) shows the complete context menu for the folder.
4. The issue is reproducible regardless of the view chosen (icon, compact, list).

This seems to be a regression, but I have no earlier versions to test nor the time to bisect at the moment.