I tried the following:

• Enable and Disable Auto Rotate.
• Installing multiple force orientation apps from google store.
• Upgrade flutter to see if the issue is resolved.

But unfortunately it keeps consistenet behavior to auto rotate device.

After that, I tested using a phone emulator the issue is not there.

The issue is not related to flutter, but all android tablet emulators.

I assume testing on real android tablets will not generate the same issue. I'll update answer after I test on a real device tablet!