Unexpected value - Uncaught (in promise) Maximum recursive updates exceeded

[matopim]

Unexpected value (counter in cycle).
Just open the console. There will be an error in it: "Uncaught (in promise) Maximum recursive updates exceeded...."

What is expected?
i = 1 ... i = 4

What is actually happening?
i = 405 ... i = 408

At the end of the example there is a link to a real problem where the condition is for a date separator within one day. This example shows the same maximum recursive error...

Lnk for problem:
https://www.pim.sk/pokus/xxx/vue-test-cycle-width-condition.html