Error when emptying edit

In mobile chrome (android phone/table) 

i get error bellow when I use back space in tWebEdit. This also occurs in TWebStringGrid
I'm using webcore 1.4.1 with delphi 10.3.1. Works ok in PC chrome
Chrome version in mobile 83.0.4103.106, tablet: Androd 9 

Uncaught TypeError: Cannot read property 'charAt' of null | TypeError: Cannot read property 'charAt' of null at Object.HandleDoInput (http://desktop-3blbkd1/e/e.js:24061:21) at HTMLInputElement.cb (http://desktop-3blbkd1/e/e.js:222:26)

This was just simple PWA application where I only placed one TWebEdit, nothing else.

demo effect can be found in

error only occurs in mobile, not on pc. 
Just click there and start to remove WebEdit1 text with backspace.

Looks like that key is mobile browser. If i check "Desktop site" from mobile chrome, error is gone.

And If I change my Pc chrome to mobile mode, error occurs also in PC.

This appeared to be an Android mobile browser specific issue.
We could address this. The next update will address this.