Opencart Product option quantity set 0 show out of stock text

Hi,
we have a little problem with the stock status of a product if the option quantity is 0 ( version 2.3.0.2)

We have a product XY wit follow settings
quantity: 1
out of stock : 2-3 days

product options:
Green - set quantity 1
blue- set quantity 1
red - set quantity 0

If we select
product XY + Option Green -> it shows in stock on the product page
product XY + Option Blue -> it shows in stock on the product page
product XY + Option red -> it shows ALSO in stock on the product page -> but it should now 2-3 days ( out of tsock status)

Is there any solutions? if the Product option is 0 to display the out of stock text?
At the moment Opencart show everytime in stock, the option quantity will not be considered.

Is there any solutions?

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