CLI mail app backspace broken

[jagdpanther]

Inside a terminal window (xterm) backspace normally works as expected. However, when using 'mail' CLI program (from mailx package) both when typing the "Subject:" and the body when I press backspace I receive what looks like a ^H (shift-6 followed by "H") instead of erasing a character. Any idea where I should start looking to fix this? (Also if someone knows some other key combination to simulate a backspace, please let me know.)

For example on each line of the following I made an error (extra character) and pressed backspace. Only on the first line, before 'mail' runs, did backspace work as expected:

[myga]

Just tested it on Mint from Windows Terminal using SSH and it works fine on BASH, SH, & ZSH. I'm suspecting the terminal emulator you are using is the issue.
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[jagdpanther]

[Banana]

It is the backarrowKey functionality from https://linux.die.net/man/1/xterm

A good description can be found here: https://superuser.com/questions/993171/mobaxterm-backspace-sends-h

[jagdpanther]

Banana: Thank you for the links.

I tried two of the listed solutions without success.

However, I notice that in xterm when running a CLI program (ex: mail) when backspace does not work and I receive a ^H that <ctrl>backspace does work.