[BUG] Issue with grid columns and language layers

[FallenVixtah]

Describe the bug
Grid element in combination with language layers doesn't work properly.

When moving a content between column elements, the content is deleted, and in some cases all other contents placed in the columns. I had no problem as Admin, but found the issue testing with Editor account. Customer Therese user was changed from Editor to Admin, but says she still experiences the issue. When I tested to create a new page and also copied the original page, it seemed to work fine as Editor.

System log says:

Core: Exception handler (WEB): Uncaught TYPO3 Exception: #1476107295: PHP Warning: file_get_contents(): Failed to seek to position -10 in the stream in /app/public/typo3/sysext/core/Classes/Cache/Backend/FileBackend.php line 262 | TYPO3\CMS\Core\Error\Exception thrown in file /app/public/typo3/sysext/core/Classes/Error/ErrorHandler.php in line 134. Requested URL: https://www.vatette.se/typo3/index.php?route=%%2Fajax%%2Frecord%%2Fprocess&token=--AnonymizedToken--&cmd[tt_content][9433][move][action]=paste&cmd[tt_content][9433][move][target]=246&cmd[tt_content][9433][move][update][colPos]=9430-2596&cmd[tt_content][9433][move][update][sys_language_uid]=0

The issue has been noted on gustavsberg.com for Danish and Norwegian layers on page "Brochures" (PID 246)

To Reproduce
Steps to reproduce the behavior:

NOTE! Testing this on the live page "Brochures", will probably delete the content, meaning that the content needs to be added again manually. (I have already done this twice for the Danish page, and will now do i for Norwegian as well....)

1. Switch to user [email protected].
2. Add copy of existing content in a column, and then move it between the columns.

Expected behavior
I expect the content to NOT be deleted and just moved to a different column.

Screenshots
N/A

Desktop (please complete the following information):

• Browser - Tested in Firefox, but I believe it will be the same result in all browsers.
• TYPO3 Version 10.4.20

Smartphone (please complete the following information):
N/A

Additional context
N/A