Curious. This is what I'm seeing.
Under 11.2, the highlighted text pastes correctly (last line).
Under 11.3, it doesn't for me. What's weird is the way the text is highlighted. It seems to have selected text a couple of lines above.
Having said that, cut and paste seems to work, in a manner of speaking, for the first couple of lines above and then breaks, in this case, from line 3 where the date wraps.
The other thing I noticed is when I maximise the font size in the 11.3 Shell, the text seems to get bunched up.
Under 11.2, line spacing looks fine at the maximum font size. Seems like what I'm observing is some issue with line spacing in 11.3.
All my 11.3 servers are exhibiting the same behaviour. My 11.2 server is fine. It's the same behaviour in any browser I use and from any Windows 10 PC.