[Plugin: Custom Field Template] Values lost after switching between templates

Hi,

I have two custom field templates for pages.
When I make settings in the second template, save the page and than switch to the other template and save other settings/values there, the values in the second template are gone when I load it.

The values in the first template seem to be permanent but the values in the second template are always gone after switching the templates and saving the page after changes in the first template.

Does anybody know this issue?
Is there a solution to make sure that values are permanent even with several templates for pages?

I’ve tried the autosave option but it dis not work ether.

https://www.ads-software.com/extend/plugins/custom-field-template/