Unable to create a new file from a template

Steps to reproduce

1. Create an Excel table template
2. Import an Excel template into Nextcloud Office settings
3. Try creating a new spreadsheet from this template

Expected behavior

The spreadsheet is supposed to open and therefore the file is created.

Actual behavior

Via the Nextcloud application it is impossible to create a new file from the templates. On Android it is downright impossible to select a template and on iOS during creation it runs in a vacuum and ends up creating an empty file in the wrong format.
On the other hand, via the web interface from a computer, this poses no problem.

Host OS

Ubuntu 20.04

Nextcloud AIO version

Nextcloud AIO v4.8.1

Current channel

Latest channel

Other valuable info

On creation failures via iOS, no error log is generated and no error messages on the device. On the android side I can't even create a file from a template.
Here are the only logs I have regarding Richdocuments that I don't understand the origin at all.

richdocuments-error.txt

Thank you in advance for all the help provided, it's not totally blocking but quite disabling.

Start by reproducing template creation on Android and iOS, then compare the behavior with the working web interface. Review the attached Richdocuments logs and the differences in how each client selects and creates an imported Excel template. Done means both mobile clients create and open the spreadsheet in the correct format.