Blue Iris

I have a Boavision 5MP 30x PTZ. Today I noticed I cannot use diagonal PTZ movement, when prior I had been using it frequently. UP DOWN LEFT RIGHT work fine but choosing diagonal results in up or down movement only. I have reverted back to a BI version that I was certain this feature worked but it did not resolve the issue. I have factory reset the camera, removed it from Bi and added again but still not fixed. The camera has not received any updates. The only thing that changed to my knowledge is updating BI.

Recommendations?

Other than checking the PTZ settings in BI5, I would suggest an email to Support. Diagonal control is working here with BI5 v5.9.2.4 and a Dahua PTZ.