# Summary <!--Describe the bug in short here. Describe what happens that is considered bad behaviour.--> When creating a lab, filling in the "slot selection opens" time manually without the `:` creates interesting behaviour: hitting the "Create lab" button at the bottom simply refreshes the page, no message whatsoever. Now the time is suddenly formatted correctly, and hitting the button again _does_ create the lab. # Steps to reproduce <!--Describe the steps required to reproduce the bug. An enumeration with screenshots is preferred to be able to easily reproduce.--> 1. Go to the lab creation page. 2. Fill out everything correctly. 3. Choose a time for the "slot selection opens at", but fill out the time like `0900` instead of `09:00`. This works fine on the other date/time pickers (lab start + end time). 4. Hit "Create new lab". 5. Observe that the lab was not created, but also no error shows. 6. Hit "Create new lab" again without making any changes. Now it works