Template files and ?> errors

Drupal CS reports spurious formatting errors in templates, which use < ?php ? > frequently. Sometimes, when Drupal CS encounters a line with ?>, it emits an error explaining that a file should end with a new line.

Example:

120 col 4 error| Files must end in a single new line character

The line in question (line 120) is not the end of a file. It is just a line that contains } ?>.

This happens inconsistently. Not all such lines get that error.

Example:

In another case, a line like this generates the same error:

< ?php } ? >

125 col 10 error| Files must end in a single new line character

In all cases, the closing PHP marker seems to be close to the end, but not the last line.