Vault just keep amount that will be save in case of raids. There is no limit, after which resources will no longer fit in the city. They just will be unsafe for raids

TheMonk said:

Corgi  please do not attempts to answer questions in which you do not have the answers 

It's not your business who and how I respond 

I have seen this in other posts to so will try and explain the problem so a moderator can look into this:

For example: the vault protects 100k of wood.  And you have 200k wood in your city.  When someone attacks you they take away 150k of wood leaving you with 50k of wood.

In summary the vault is not protecting 100k wood as it says.

morefield1234 said:

The vault doesn't add capacity.  It protects the capacity you already have in other buildings.

If that is the case then it is still a bug - a design bug. The game gives the image of a separated storage place by graphics and text. If it is actually implemented as a safe box in every productive building without adding capacity  then image and implementation do not match.

Total capacity (without raid ) production wise is building plus vault capacity . production is only producing  to building capacity my vault capacity is larger than building capacity so my vault is not being filled.