What is your operating system?
What is your Shotcut version (see Help > About Shotcut)? Is it 32-bit?
Can you repeat the problem? If so, what are the steps?
(Please be specific and use the names as seen in Shotcut, preferably English. Include a screenshot or screen recording if you can. Also, you can attach logs from either View > Application Log or right-click a job and choose View Log.)
Crop:rectangle parameters are “read only” when typing them or pressing arrows next to fields with numeric values. I can change position and size only with mouse on the video preview. However If I enter text fields “Position” or “Size” and try to type new value, after entering enter at the end, the system returns to the previous value (so it’s ignoring the entered value). Moreover if I use small arrows (top/bttm) next to these fields with numeric values, nothing is changing. I’m sure that in previous versions those fields were editable.
Moreover I have impression that I’ve noticed the same problem for some other filter but as it happened only once, I don’t remember now details. I’m writing this additional remark as I’m wondering if it might be some more generic problem touching not only this filter…