BUG: Digit "5" rendered incorrectly at specific font size

[runyx17]

I noticed what looks like a small UI bug. The digit 5 is displayed incorrectly when a specific font size is used. In other font sizes the number looks normal, but at this particular size the 5 looks visually broken.

I have seen this in different places in the watch interface. It appears on the watch face and also during an activity when numbers are shown on the screen, so it does not seem to be limited to one specific screen.

I attached two photos where the problem can be seen.

Device: Suunto Vertical 2
Firmware: latest version