Selecting the End Date inside a Custom Project then going back to the main SQX page or other Custom Project will RESET the End Date to the Last date..
i tried everything, restarting SQX, opening a new custom project, etc..
its a bug,
not sure what the hell is wrong, it was not like that previous beta versions
How to Recreate:
Create a Custom Project, Create a Builder Task, Select the date ranges that you want,
Now go back to the Custom Projects Menu area, Enter the Custom Project that you have just created, Check you date ranges again, you will see it just got restarted to ALL data.