Can't move caret to leftmost position in text input with arrow keys

[jdm]

./mach run -d 'data:text/html,<input value="hi">'
Try to use the arrow keys to position the caret in front of the h. I would expect the error to exist in the code that deals with a single horizontal adjustment.

[highfive]

Hi! If you have any questions regarding this issue, feel free to make a comment here, or ask it in the #servo channel in IRC.

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[vn-ki]

@highfive: assign me

[highfive]

Hey @vn-ki! Thanks for your interest in working on this issue. It's now assigned to you!

[mandreyel]

I can position the caret in front of the h with the arrow keys. Has this been fixed?

[jdm]

I can still reproduce this on macOS.

[mandreyel]

Ah ok, I'm on Linux.

[flofriday]

Also on macOS, I can only move the cursor one position back.
I tested it with this command ./mach run -d 'data:text/html,<input value="hello">'.

[jackxbritton]

Hey, I can reproduce this. Can I get assigned?

[jackxbritton]

Did some experimentation, what's happening is that additional unicode characters (\uf702 and \uf703) are being inserted into the current line whenever a key is pressed. This is a clone of #22345 and rust-windowing/winit#778.

[jdm]

Thanks for verifying that!