OpenBCI GUI v5.06 opens blank screen - macOS Catalina

[Daisykh]

Problem

When updated from 5.05 to 5.06, the OpenBCI GUI fails to open and displays a blank grey screen. v5.05 opens as expected with full functionality to connect to a Cyton board. I have tried 3 times to update and each time have had the same issue with 5.06 causing me to uninstall and reinstall 5.05. Image of GUI with version number below:

Expected

Opening the app should display the GUI as it does with 5.05. Image of previous version working below:

Operating System and Version

macOS Catalina, v10.15.7
Macbook Pro 2019

GUI Version

5.06

Running standalone app

Downloaded GUI app

Type of OpenBCI Board

Cyton board

Are you using a WiFi Shield?

No

Console Log

n/a, console log doesn't appear

[retiutut]

This is likely a duplicate issue (#987) that will have a fix in the next version of the GUI. To confirm, you could follow the same steps as in the other thread.

Caused by fixing #968

1. Can you please run the GUI from Processing 3? Follow the steps shared in OpenBCI GUI v5.0.6 shows only a blank window upon startup on my MacBook M1 #987.
2. Then, remove the pixelDensity() line of code that appears in OpenBCI_GUI.pde and run again?
3. Report back with the results of this test.

[Daisykh]

Ahh! Yes, looks like the same issue even though I'm on an intel macbook pro and not M1! Here's the results:

1. Running via processing3, no changes made and results in the blank screen. Here's the console output:
   

2. Commented out pixelDensity and it now opens! Here's the console log output that includes the screen size and High-DPI detection of my macbook:
   

3. I also tried moving pixelDensity(displayDensity()) into the settings function and it produced the same results as commenting it out entirely. Here's a screen grab:
   

This issue can be closed as a duplicate and I can relay my findings in #987 if it would be helpful.

[retiutut]

Since this happened on different hardware and OS version, I'm going to keep this open until it's fixed.

Thank you for making an issue and following the template!