Input only the first line when pasting multiple lines from bridges.torproject.org

The result page on https://bridges.torproject.org/bridges?transport=obfs4 seems to be doing "something" to force the selection of both bridge lines.

When pasting these in Tails, multiple lines are pasted in the input field.

If I click on Connect to Tor after that I get immediately to the error screen.

Could we trim the pasted input to the first line only?