Inventory Transaction Documents should not affect Tickets. They can possibly affect the Accounts though, depending on how they are set up (i.e. if you created an Inventory Document linked to an Account such as Sales, it could decrease the amount in that Account). I find this to be very unlikely though.
You are not getting the proper Ticket Counts, which is affecting the Sales figures, which has nothing to do with Inventory.
I realize you mentioned this already, however, please check again for the 11th, and also determine whether a previous Workperiod “spilled over” to the 11th before it was closed. Post a screenshot of your Workperiods.