Steps that cause my problem
1. Creating a series of recurring events
2. Change the time of one, apply only to this event
3. Change the description of one, apply to all

Step 3 will override changes made in step 2, which is unexpected behavior. I only touched the description, so why are the time and date of all the other events also touched? As someone who edits a lot of recurring events this is a must have before I can switch from gmail.