Restart Client after Change in Table Design

In NAV 2015 it was pretty easy for a developer to change a table design of Table 18 (Customer), e. g., without the need to restart the client.
Now, in NAV 2016 (Cum. Update 4) any changed table object throws an immediate error in the RTC, which is often not even related to the changed table. For example: A change of Table "Item Variant" causes the immediate error on the open Item List page:

Is this a bug or a feature?
Please try it out yourself, before you post further questions.