Incorrect parsing of _Element.text with comment tag(s)

When calling .text on an _Element object, the text returned is only the partial text, if a comment tag is present within the text itself (valid XML). The full text, minus the comment block, was expected to be returned.

lxml information:

Python : sys.version_info(major=3, minor=9, micro=2, releaselevel='final', serial=0)
lxml.etree : (4, 6, 3, 0)
libxml used : (2, 9, 10)
libxml compiled : (2, 9, 10)
libxslt used : (1, 1, 34)
libxslt compiled : (1, 1, 34)

Example POC:

from lxml import etree

x = '''<a>a,
  <!-- b, -->
  c
</a>'''

x2 = '''<a>a,
  b,
  c,
  <!-- d, -->
  e
</a>'''

el = etree.XML(x)
expected = 'a,\n c\n'
actual = el.text # 'a,\n '

el2 = etree.XML(x2)
expected2 = 'a,\n b,\n c,\n e\n'
actual2 = el2.text # 'a,\n b,\n c,\n '