Steps I took that resulted in the problem:
When I set the prototyping board’s size to e.g. 58 and 74, Fritzing stops drawing all holes correctly.
My version of Fritzing and my operating system:
Version 1.0.5
(1.0.5rc1 2025-04-02) 64 [Qt 6.5.3]
Running on Ubuntu 22.04.5 LTS