Is this a bug or is it normal?

[AlwaysLucky]

<template>
    <div>
        <knob-control v-model="value" :size="180" :min="0" :max="100"></knob-control>
    </div>
</template>

<script>
import Vue from 'vue'
import KnobControl from 'vue-knob-control'
Vue.use(KnobControl)
Vue.component('knob-control', KnobControl)

export default {
    data() {
        return {
            value: 10,
        }
    }
}
</script>

<style lang="scss" scoped></style>