AMS proof square drawn over text

[kg583]

Load the AMS template and write

#proof[
  #("1"*63) 1
]

which yields

[kg583]

A similar issue occurs with numbered equations:

#set math.equation(numbering: "(1)")
$ sum_(n=0)^infinity p(n)q^n = 1 + q + 2q^2 + 3q^3 + 5q^4 + 7q^5 + 11q^6 + 15q^7 + 22q^8 + 30q^9 + 42q^10 +... $

I have also seen this issue in the IEEE template. No overlap occurs if no template is used.