Windows resized to top half screen after removing HDMI

[german-garcia]

What Happened?

After removing the HDMI cable for my 2nd monitor (in elementary 7 Horus), every window is resized to the top half screen, even when maximizing them.
Seems to happen when dock is not hidden. This problem does not occur when changing Dock settings to "Hide when: any window overlaps the dock".

Display info

I use a Samsung 44" TV as a monitor, but it's detected as 85" (had the same issue in elementary 5)

StackExchange question

Steps to Reproduce

This is how it looks after removing the HDMI cable.
Maximized:

Expected Behavior

Maximized window should occupy the whole screen, not the top half.

OS Version

7.x (Horus)

Software Version

Latest release (I have run all updates)

Log Output

No response

Hardware Info

~$ lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Address sizes: 39 bits physical, 48 bits virtual Byte Order: Little Endian CPU(s): 4 On-line CPU(s) list: 0-3 Vendor ID: GenuineIntel Model name: Intel(R) Core(TM) i3-6006U CPU @ 2.00GHz CPU family: 6 Model: 78 Thread(s) per core: 2 Core(s) per socket: 2 Socket(s): 1 Stepping: 3 CPU max MHz: 2000.0000 CPU min MHz: 400.0000 BogoMIPS: 3999.93