Hi, sorry for the late reply. I tried using shift to activate both Rotate and Move mode but didn’t get the problem you described. However, there was one limit in BP which had to be modified in order to allow same key for activating both modes. To remove that limit:
Open PUPI blueprint [in Blueprint -> Core folder],
search for (Ctrl + F) “Don’t move object if Rotate or Scale Mode is active” (with quotation marks)
Break bool pin connected to “Pick A” and set it to False,
search for “Don’t rotate if Move or Scale mode is active” (with quotation marks)
Break bool pin connected to “Pick A” and set it to False.
This way I was able to use Left Shift to activate both Rotate and Move modes at the same time.