==== What is the problem?
On Safari, trying to copy one side of the diff actually copies both, even though it shows that only one side is selected. See screenshot.
==== Steps to reproduce problem
# Open Safari
# Go to https://en.wikipedia.beta.wmflabs.org/w/index.php?title=Wikidiff2_new_page&type=revision&diff=511452&oldid=511451
# Select one side of the diff (either left or right) and copy
# Open a text editor (for example) and paste
**Expected behavior:** Only the content from the one side of the diff you selected in step 3 is copied
**Observed behavior:** Both sides are copied
==== Environment
**Browser** Safari 14 (Big Sur), Safari 13 (Catalina)
**Wiki(s):** https://en.wikipedia.beta.wmflabs.org MediaWiki 1.38.0-alpha (ad94e00) 06:01, 22 October 2021.
==== Screenshots (if applicable):
{F34706530}