That looks odd! I just tried on 2018.3.2 Desktop and don't see this issue. Is it possible for you to upgrade and try again? It's a minor version upgrade so usually bugs and other stability issues are fixed.
You could also reach out to Tableau Support and let them know in case upgrading doesn't fix it: Support Case | Tableau Software
Hope this helps!
Santiago, yet it’s very odd.
I copy info into Excel almost every day and this just started this past Tuesday.
As a company we upgraded to 2018.3.1 this past December.
We don’t automatically upgrade cause we want everyone to always be on the same version.
I’m all fixed.
Apparently somehow when I pasted from Tableau it was similar to ‘text to columns’ in Excel and my excel was confused and doing the wrong thing.
One of our IT guys fixed me up.
Here’s what he found:
I followed this and everything is working fine again.
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Ah! That's good to know! Thanks for posting back and letting us all in the community know about it. It would have taken me a very long time to find that out! Great to hear you are all set!