input with mask cut value and add some number

[kurwaBober]

V-Mask and Vue versions

1.3.1, 2.5

Reproduction Link

https://codesandbox.io/s/v-mask-demo-forked-gdpchi

What is Expected?

i have value number +77987654321 and mask +7 (7##) ###-##-##. When i write number everything is ok, but if i have that value from state everything go wrong, mask add 7 to start and cut last number