Big gap between numbers in some text

As you can see on the pictures above, there are gaps between big numbers (>1000)
between the thousands and the other numbers.
I think the bug appeard when I switched to window 11 some it might come from that and it seems to appear only with a certain font because for example, in my currency stash tab, my 1200+ scroll of wisdoms appear just fine.

Feel free to ask more picks or any question I could answer !

The game uses your computer's Region formatting option for this.

For Windows 10/11:

Settings > Time & Language > Language & Region

Under Related Settings, click "Administrative language settings" if Win11, or "Additional date, time, & regional settings" then "Region" if Win10. In the window that opens up, click "Additional settings".

Here, the "Digit grouping symbol" is what PoE should be using here, while "Digit grouping" should provide a preview of what it will look like. I would recommended replacing the "Digit grouping symbol" with your preferred symbol; if you just want a white space, highlighting the contents and pressing space should suffice.