Hello,
Please run this script in the terminal as a command. It will reset display settings and restore display persistence. It should allow to save your screen layout settings.
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Perform these actions only with 1 laptop display, do not attach any external monitors.
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1. Download the file:
https://www.displaylink.com/downloads/file?d=145
2. Run the file (it will give you an information that it is not authorized due to security).
3. If you see a message related to security Go to Security & Privacy -> General tab, choose: Allow App Store and identified developers.
4. Next to it you should have a popup message about our display persistence script.
5. It will open terminal after double-click and ask for the password.
6. Afterwards reboot your computer.
Best regards,
Katarzyna