Confirmed in LV2019 64-bit and LV2020 32-bit running on Windows.
Urgh this is horrible 😞 but I am actually kinda surprised I missed this as I am finishing up quite a large 2019 project and moving stuff around in the project is something I do quite regularly for housekeeping.
As you said, it was difficult before but possible. I am hoping this is just a bug and not an added "feature" that the "data" told NI that customers wanted.
My latest weird project bug with LV2020 is when I close the project it does not automatically close any windows I had open 🤬