Github user mcgilman commented on the issue:
https://github.com/apache/nifi/pull/1334
Thanks for checking back and providing these details. I think the button is
wrapping to the next line. We've seen this sort of thing in the past. In fact,
we just merged in a PR that addressed this in a few of the other tables.
However, the issue has never been in Chrome. It's typically been with a
different browser. Chrome seems to be rendering it ok for me right now.
Can you verify that the browser is not zoomed in at all? You should be able
to go to View -> Actual Size and see if the button shows up again. Let me know
if this doesn't help.
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