Test for empty text field if contains an apostrophe?

I am trying to test whether a channel field is empty. I did this successfully on EE2.5 but on EE3.3.3, it gives me an error.

So, for testing purposes, I created a channel with one textarea field named “tester_text”. Here is the template:

{exp:channel:entries channel="tester"}
 
 {if "{tester_text}" != ""}
  {tester_text}
 {/if}
 
{/exp:channel:entries}

If tester_text has text in it without an apostrophe, it works correctly. However, if there is an apostrophe, I receive this error:

Error

You have an invalid conditional in your template. Please review your conditionals for an unclosed string, invalid operators, a missing }, or a missing {/if}.

Parser State: Unexpected ‘s’ (VARIABLE); expected RD in Template “amp_site/testy” on line 3.

So, how do I test this type of field? Is this a bug or is there another way to test?

Any help appreciated! Thanks