Hello -
This seems to be a defect indeed - thanks for bringing it to our attention.
Here a one way to work around it:
Step 1: copy the data

Step 2: Paste the data

Step 3: click on (Crtl) pull down in Excel

Step 4: select "Use Text Import Wizard..."

Step 5: make sure to use "Tab" as delimiter

Step 6: you will need to clean up the label manually

Hope this helps.
Regards,
Udo