Raise JS TypeEroor "toLowerCase" after update to 2.35.3

[MichaelJumble]

Select Mail Button at Top of Nextcloud 27x+28x with Link

/index.php/apps/snappymail/

Raise this error at frontpage:

An error occurred.
Please refresh the page and try again.TypeError: (F(...) || "").toLowerCase is not a function
A clear and concise description of what the bug is.

Happen since update SnappyMail to 2.35.3

[derStephan]

Having the same problem in standalone version after update to 2.35.3

An error occurred.
Please refresh the page and try again.
TypeError: (intermediate value).toLowerCase is not a function

in console it says

Uncaught (in promise) TypeError: (intermediate value).toLowerCase is not a function

[derStephan]

Wow, your response times are incredible.

[the-djmaze]

Wow, your response times are incredible.

Thanks!
I'm just... https://www.youtube.com/watch?v=suCm1w_KTiY