@Liane the Wayfarer: That is something strange indeed. I am unable to reproduce it, but it seems as though the javascript is interpreting the 'd' in '2d6' as the exponential indicator, thus making it look like a 2 with 6 zeroes (i.e. 2 x 10^6) . Similarly, you are seeing a 1 with 10 zeroes for the halberd (i.e. 1 x 10^10) and a 1 with 8 zeroes for the light crossbow (i.e. 1 x 10^8) .
This is something to do with the language of the PDF or operating system you have running, combined with the version of both.
I think I have a solution, could you try
this character sheet and see if it still happens?
If that file doesn't work any better, could you tell me what software you are using to view the pdf, and the software's version and language? As well as what version and language of OS you are using? And what happens when you change the damage die to something else (the field with blue text in the same line that says '2d6'), to for example '2p6'.
@TreChriron: Great that you like the sheet! The small boxes with red and black arrows are to indicate advantage and disadvantage. Select, for example, a heavy armor and you'll see the box with red arrow next to the Stealth skill get selected. Or select the Poisoned condition and see all skills get disadvantage.