No products left after deleting filter

-- HikaShop version -- : 2.50
-- Joomla version -- : 3.4.3
-- PHP version -- : 5.4.43
-- Browser(s) name and version -- : Opera

After applying a filter, based on characteristics, the filter works well.
Unfortunately after deleting the filter, no products are left.
Does it sound familiar to someone and know how to solve this issue?

I don't have the same problems using filters based on other brand of price

the screenshots:

Filter

Cause of adding a reset button, yes.
But no products are shown when you add a color filter.
In the screenshot you can see the characteristics is added to the products

update: If i add a filter by brand first, the color filter works like a charm, but otherwise it shows no products. I am curious.

Could be a issue by reset button, but for what reason does it work after filtering by brand or sort first?

For me, it looks like an issue filtering by characteristics.

I am wondering what to do to solve this issue

If i select "merk" first. All filters work.
If i filter of the other filters firs. No results are shown and i need to reset the filter to continue.

I deleted the brand filter and add the filter by brand as a characteristic.
Now its works like a charm