Editting problem with ins mode

when editing normal document, and I found
the " ins mode " happened , which is like hitting
ins key in some other editting software which
would happen, that is the cursor replacing the
selected character instead of adding the character
I typed after the cursor.

This happens when Iā€™m using latex text format in dynalist which is katex. i.e $$ text $$

I am not sure if this is normal and looking for
a way to solve it.

Wish to control it in a manner like hitting ins
key.

Environment

Which operating system are you using?
Which browser are you using?
If youā€™re using a desktop or mobile app, whatā€™s the version number of Dynalist?
Are you using any third-party scripts for Dynalist, e.g. PowerPack?
Windows 10, Asus Notebook X550SV, Chrome
web browser.
web address: dynalist.io


Additional information

Anything else you think would help our investigation, like a screenshot or a log file? You can drag and drop screenshots to this box. For large amount of text, try putting them into something like Pastebin.


Additional comments

Sorry for the super late reply - this is intended behavior. The browser enforces the ā€œINSā€ insert mode.

Just press the insert key that sits on top of ā€œDeleteā€ should switch you out of the insert mode.