STR:
Settings -> Preferences -> General -> Localization: select a RTL language (e.g. Hebrew).
Restart NPP.
Open files A and B.
Move A to other view.
Hover over A's tab.

Result:
B's path is displayed in the tooltip.

Two more glitches in NPP RTL.

1.
Open one file.
Open a panel (e.g. Function List).
Hover over the file's tab.

Result:
No tooltip.

2.
The tabs Close button is cut off by 1px.

Notepad++ v7.8.8 (32-bit)
Build time : Jun 24 2020 - 00:15:36
Path : C:---\npp.7.8.8.bin.minimalist\notepad++.exe
Admin mode : ON
Local Conf mode : ON
OS Name : Windows 7 Enterprise (32-bit)
OS Build : 7601.23964
Current ANSI codepage : 1255
Plugins : none