Not sure how to report this, but I just edited an existing page adding some text made of quotes and links.
This is how it looked like when editing (in place editor):
But this how it rendered after hitting Save & View:
I’ve edited the page twice to be sure, and I obtained the same result.
Yes, from the Git docs pages. Though I see the same behaviour if I paste into an empty quote block or if I paste the text, then select it and add a quote block.