I don’t think I’ve reported this UX issue before, but it’s been there for years now. It sometimes affects you when you copy data from a spreadsheet to import it as a table onto Discourse. Steps of reproduction:
- Enter some data on a spreadsheet.
- Copy and paste it to Discourse.
- Works  . .
| This | works | perfectly | 
|---|---|---|
| What | a | lovely | 
| feature | this | is. | 
- 
Go back to spreadsheet. 
- 
Clear the top-left corner cell or the bottom-right corner cell. 
- 
Copy and paste it to Discourse. 
- 
Won’t work.  works perfectly 
 What a lovely
 feature this is.
I ran into this once again today when I downloaded some data from a web page into Excel and then was trying to paste it to our site. There is an easy work-around: fill something into the empty square, copy-paste and clear the cell again on Discourse end.
| works | perfectly | |
|---|---|---|
| What | a | lovely | 
| feature | this | is. | 
I would like this fixed anyway since it still confuses me for a second every time it happens! And frankly, you can’t educate your users about such niche scenarios, but it really disrupts you when you run into it for the first time.