How to improve a Likert plot function ?

Hi ,
my question is based on this function:

https://stackoverflow.com/questions/37761096/likert-plot-showing-percentage-values

The function is called " myPanelFunc()", and is very good, but when I have got 0.00% response for a particular question level (likert Scale),
obraz

the numbers are getting squeezed:

obraz

How to improve this function in order not to display 0.00% at all if there was no answer at the specific empty level of a question, given by respondents ?

Any help would be very much appreciated, thank you.

Without more of a reprex it is not immediately clear how to help. I am assuming this is some factor level and my advice would be to write a check to drop a factor level if it is not present in a column. In that way it will only show 4 labels and their values.

Thank you @GreyMerchant,

all the reprex there is on SO site that I linked.

This is not good solution for all plot but very good for one item only.
My question is how to force a function not to display 0.0% values.
this is all I want.

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