Calling 'cmdChangeElement' on 'ServerRewards v0.4.70' took 102ms
Calling 'cmdChangeElement' on 'ServerRewards v0.4.70' took 104ms
Calling 'cmdChangeElement' on 'ServerRewards v0.4.70' took 123ms
Calling 'cmdChangeElement' on 'ServerRewards v0.4.70' took 151ms
Calling 'cmdChangeElement' on 'ServerRewards v0.4.70' took 132ms
Calling 'cmdChangeElement' on 'ServerRewards v0.4.70' took 138ms
Calling 'cmdChangeElement' on 'ServerRewards v0.4.70' took 137ms​

Why does this happen everytime you switch tabs? Is there a maximum ammount of items you can have in the shop?

I've had this happen alot in the past too, but now with the newest version it's happening again.