Focus Item & CustomFields on Mobile Broken

Your software
My Mautic version is: 4.4.4
My PHP version is: 7.4
Your problem
My problem is:

calling custom fields in a focus item works on desktop, however on mobile it does not work, it does not actually fetch the custom field, and leaves you with the tag {contactfield=firstname}.

Anyone experienced this and if so knows of a current fix, maybe in a later version of Mautic?

These errors are showing in the log:

Steps I have tried to fix the problem: