Hi
The image shows Restricted on top left corner, how that message showing up? And from image it looks you are using a responsive form. Have you tried to delete the custom task form and re-create a new one? Also try with classic form to check if works.
I deleted current form and tried both responsive and classic form but result is same.
Restricted I think that is because of my organization
Strange, have you made any customizations either to classic or responsive form? Like injecting any custom script? rules?
Were you able to see the custom task form in "Privew" mode before save & publish the form?
I did not add any custom scripts, when I create new list and add new workflow also happens same thing.
But nintex form work fine for list. only Request Approval task form only gives this issue
Does the task form work properly in preview mode?