Xperia 1 II Android 11 screen resolution

[Nikitendo]

After updating to Android 11 (58.1.A.0.921), the screen resolution of the Xperia 1 II has changed from 1644*3840 declared on your website to 1096 * 2560. This is evidenced by the resolution of the saved screenshots and the result of executing the ADB command:
Command: adb shell wm size
Result: Physical size: 1096x2560
This problem is observed not only for me, I asked random Xperia 1 II users, and everyone with Android 11 has the same problem. And those who have not yet had time to upgrade to Android 11 have a resolution of 1644 * 3840
Is this a temporary bug or will such a low screen resolution stay? If this is a bug, then please convey this information to the developers

[RottenFoxBreath]

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@OmarSaidi wrote:

After updating to Android 11 build-number (58.1.A.0.921), the screen resolution of my Xperia 1 II has changed from 1644*3840 to 1096*2560. In Android 10 it was everywhere 1644*3840

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And when needed, it will switch back to 1644 x 3840 so as not to drain the battery all the time.

And besides, it is full resolution all the time, just 1096 x 2560 upscaled to 1644 x 3840.