Description:
In the development version of the Writer, it is not possible to work with tabstops using the mouse and ruler. If you click on the tabstop sign on the top left, it doesn't change, you can't add, move, remove it with a mouse. You can do it only by menu, but tabstops are not visible on the top rule then.

Steps to Reproduce:
1. Click on the tabstop sign on the top left - doesn't change
2. Try to add a tabstop with a mouse - doesn't work
3. Add a tabstop by the paragraph menu - it works but you don't see the tabstop

Actual Results:
Described above.

Expected Results:
Clicking on the tabstop's sign should change its type, click on the top rule should add the selected tabstop. Tabstops should be visible on the top rule.


Reproducible: Always


User Profile Reset: Yes

Additional Info:
I tried it on Arch Linux and Windows 10. It doesn't work in either.