NPP RTL: Floating panels can not be moved

[Yaron10]

STR:
Settings -> Preferences -> General -> Localization: select a RTL language (e.g. Hebrew).
Restart NPP.
Open the Document List.
Double-click the title bar (- the panel should be floating now).
Left-click the title bar, keep the button pressed and try to move the panel.

Result:
The panel can not be moved.

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Notepad++ v8.1.4 (32-bit)
Build time : Aug 21 2021 - 12:58:42
Path : C:\Users---\Downloads\npp.8.1.4.portable\notepad++.exe
Command Line :
Admin mode : ON
Local Conf mode : ON
Cloud Config : OFF
OS Name : Windows 10 Enterprise (64-bit)
OS Version : 2009
OS Build : 19042.985
Current ANSI codepage : 1255
Plugins : mimeTools.dll NppConverter.dll NppExport.dll