Github user rstjohn commented on the issue:
https://github.com/apache/nifi/pull/1334
After further testing of this Pull Request, I noticed a User-interface
issue in Chrome that does not exist in Firefox or Safari. In Chrome, from the
templates dialog, the "trash can" is missing. As such, I am unable to delete
previously imported or saved templates. Here is a screenshot from Chrome. Note
that the div is present, but not visible.

And here is the same screenshot from Firefox.

Here is Safari:

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