Button Index Counter with Square wave input

Dear all,

I encounter a strange behaviour of the button index counter. I assumed that each time the orange input pin gets high, the output pin increases by one index valueuntil the max count is reached and then resetted to zero. But it seems to output nothing plausible. When I feed the block with a square wave input (that toggles between 0 and 1) with max index count = 3 I assume that the output counts up with the frequency of the square wave. But It does not output anything only when I increase the sqaure wave frequency. I´ve looked at lots of examples (e.g. https://ez.analog.com/dsp/sigmadsp/w/documents/5179/how-do-i-use-a-gpio-button-to-select-different-audio-processing-paths) and find also a strange behaviour with the example of the FAQ:

===Example===
This example shows a Toggle Counter counting a 50 Hz square wave's rising edges. Note that the counter starts at zero, so in this case the counter will go from 0 to 99, resetting every 100 rising edges. Since there are 50 rising edges per second, the Toggle Counter will reset itself to zero once every 2 seconds.

It´s true that the counter resets to zero every 2 seconds but the corresponding readback value in counts between 0 and 6 (28.0). I would assume that it counts from 0 to 99 every 2 seconds.

What am I missing?

Thanks in advance!