Big Category problem

-- HikaShop version -- : 2.6.3

Hi,

when I create a new category it is created, but one, it doesn't appear in the category explorer left and two, when creating a new product I cant select that category. Its as if its not existing. It is yet set to published and also in the list when clicking left in the explorer the parent category. I have tried creating a new category also under the root, same issue.
As you can see in the screen shot, left in the explorer tree the sub category is not to find but in the list right it's there.

This is what I did already:
I cleaned cache
I uploaded a backup from the weekend where I was last able to create a category
I checked if the sqlDB is acting normal and it is

Thanks for your help

Hi,
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thomasf wrote: The topic no longer exists:

It does exist and can be viewed.
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Thanks for letting me know

The problem was the browser as I found out. In IE the left menu is not adjusted when creating a new category or deleting one.
Why how ever it is like that?! No issues with Firefox or Chrome or Opera.