Windows 10: Colon font symbol show a rectangle

I changed my system font to ''Comfortaa Light'' one time, but I noticed, the colon : symbol is replaced by a rectangle instead. I tried changing my system font back to "Segoe UI" but still, the same thing.What should I do? by the way, the colon symbol still shows normally in text formats except in what's being pointed in the image below.

:)

 

comma button and colon symbol

Hello,

After update my phone to Windows Phone 8.1 I lost colon symbol from "dot" button submenu.

I turned on "comma" button, but submenu of "dot" button still has comma-symbol too. Why do we need 2 comma symbols in this case? Is it bug or a strange feature?

Previous version of Windows Phone (8) has colon in "dot" submenu.

thank you.

 

Rectangles instead of icons

Thank you for your reply. I am 99% sure it is fonts related because I remember messing with the system fonts. But I am not sure, though, that all the icons showing as rectangles are part of the font Segoe UI Symbol. Can anyone tell me that? I installed the font Segoe UI Symbol that was missing but the icons are still shown as rectangles after restart.

 

Rectangle symbols replaced Play/Pause, Previous and Next button

After using the Winaero Tweaker to change the system font of Windows 10, the media control buttons on Spotify has been replaced by rectangles. Is there any way to revert the symbols back but still maintain the current font style..? Pls help.