Tested with:
Nightly 91.0a1 (2021-06-23)

Tested on:
Win 10

Preconditions:
In about:config, set pdfjs.enableXfa = true

Steps:

1. Launch Firefox
2. Open the attached pdf.
3. Go to SECTION 5

Actual result:
Text is not aligned and there is no space between checkbox and text.

Expected result:
Text should be aligned and there should exist a space between checkbox and text.

This issue can be observed on page 3.
Also occurs on other platforms.

The same issue occurs on the second pdf attached on page 2 and 3. (please see screenshots)

Text is not aligned for the last 3 PDFs on the first page. (please see screenshot below)

Text overlaps radio button on page 13.

The issue is also found in this PDF, page 3, section c), numbered list item 3.

I have to mention that the behavior presented for the original (first attached) PDF is now different. It appears as if the issued paragraph is correclty aligned to the right, but the alignment to the left is still wrong, which worsens the behavior because the text is spilled on a new line and it's improperly rendered.

A small issue is also seen here.