Caret bar displayed outside of a number field

[bogdanmaris]

Affected versions

• 81.0a1 (2020-08-18)

Affected platforms

• Windows 10 64bit
• macOS 10.15
• Ubuntu 18.04 64bit

Steps to reproduce
pdfjs.renderInteractiveForms - true

1. Launch Firefox
2. Access a PDF form with fillable content (eg: https://www.irs.gov/pub/irs-pdf/f1040.pdf)
3. Focus Account number field
4. Fill up the field with random numbers

Expected result

• Caret stops in the box of the last number entered

Actual result

• Caret is thrown outside of Account number field suggesting there are more characters to enter

Additional notes

• S3 as suggested severity, not a major issue since it's only a visual issue, no more characters can be entered after the last one displayed even though the caret is outside of the field.