"Test detected fastmem" is not performing multiple passes

I am using "DiagROM V1.3 BETA - 21-Feb-22".

If I enter menu 2-3 "Test detected fastmem", with 4 MB installed, it will stop with a message:

"Press any key/mouse to continue"

If I press any key, then it will exit to the menu. It doesn't say that it has completed a full pass.