After upgrading Episerver CMS from 10.x to 11.11.0 and installing geta categories the Episerver Category property has disappeared from all pages blocks. I have checked the code and upgrade changes but there is no way in the code the category is getting hidden. The only way to bring the Category property back is by using the following code http://joelabrahamsson.com/hiding-episervers-standard-category-property/ and setting metadata.ShowForEdit = true;. This an ugly solution and some editors complain that they are unable to see the category property sometimes and sometimes it just appears as normal.
Any ideas about why the property disappear in the first place? any solution?