Hi, Mr(Mrs) Shyam Goyal,
Thank you for the replay...
Currently, I have no time to dig deeper into the issue, which is not too critical anyway.
I have got the suspicious feeling, that the problem might be caused by dual graphics card on Dell 4K Inspiron 7559 laptop.
F360 runs exclusively on NVIDIA card ( as per rigid driver setup,.. I will try to extract it later on if necessary).
The issue itself might be due to the dialog thread runs on the internal (processor) graphics engine. The lack of a runtime communication of dialog-F360 threads prohibits the creation of XOR convolution of both window patches.
If you have the access to the underlying code or some video frames debugging setup and of course you are curious 🙂 it might be good opportunity to .... even improve F360 UI!!!
Regards
MichaelT
MichaelT