The bug with the borderless window mode has been fixed. Please download the patch v5.6.03 from https://www.enlight.com/forum/viewtopic.php?f=10&t=5345&p=24742#p24742

Hello David. Just firing this game back up and ran into this issue. I see the menu you show in your screenshot, exactly as shown. I select the borderless window option, and 1920x1080 is the only option shown and selectable. It is marked as being selected and I have no option to deselect it other than by selecting another screen option. With the borderless window at 1920x1080 selected and hitting apply, it appears to reset the application but it does not actually change the resolution being displayed. It remains the exact same size as it was before clicking apply.

Did you see the option [1920x1080] on the screen mode menu when the [Borderless Windowed Mode] button is pressed down, like the attached screenshot?

Borderless Window mode at 1920*1080 on my monitor at 1920*1080 only works as a window that appears to be 1024*768

Capitalism Lab Post-Release Beta V5.6.05 full version installer.

To install it, download it from http://12299.cdn.beyondhosting.net/caplab/CapLab_Post_Release_Beta_Installer.exe and run the installer.

[b]New Features:[/b]
1) 3 new apartment buildings

2) More native screen resolutions supported - most common today but missing are 1366 x 768, 1440 x 900, 1600 x 900, 1536 x 864, other big screen resolutions 1600 x 1200, 2560 x 1440, and 3840 x 2160

3) Availability of a new borderless window mode (the window resolution is limited to the monitor's native resolution)

4) Alternative Keyboard command set with WSAD keys used to scroll city map. To access this option, press 'O' to open the Options menu.

5) An experimental, unsupported function of the "Prepare" unit for a potential Services DLC, suggested by Arcnor, can now be activated by pressing the ALT-P key.
For details, please see: https://www.enlight.com/forum/viewtopic.php?f=49&t=2861&start=20#p24005