We would like to let you know that we have checked the reported query and we have created the sample, but we were unable to reproduce the issue. We were able to change the picker's height using the HeightRequest property and also the PickerHeight when the PickerMode is dialog. Please find the testbed sample below.
Since we are not aware of your exact application scenario, could you please share the following details to check it further and provide a possible solution at earlier.
· Modifying the above-provided sample to replicate the issue
· If possible, can you please share the issue reproducing sample along with replication procedure