This happens on my iMac but not on my Laptop, but when I press the circle tool to enter a value for the circles size, this happens.
In every file?
Mac mini M1
Ventura 13.4.1 (22F82)
you may have different setups of grid and snapping on each Glyphs version.
What is expected to happen is a pop-up window asking for values to create a circle… So on my other Mac I can type I want a circle that is 300x300 for instance.
I belive this is an issue that is already fixed in the 3.2 cutting edge release.