VJsoneditor step the fist line head where input some words in "code mode"

[SUT-GC]

Versions and Environment

**Vue:2.9.6
**Browsers:chrome
**OS:10.13.4 (17E199)

Steps to reproduce

<v-jsoneditor v-model="testJson">

data: function(){
    return {
      json: {
           "success":true 
        }
    }
}

when in code mode, input a new line : "hello":"world", where i input w then the cursor step the fist line head，(may be the "vue-jsoneditor" lead to page auto refresh.

version 1.0.13 has the "bug"

where i use version 1.0.10, it's ok

Expected Behavior

Actual Behavior

Reproduction Link

Other comments

[SUT-GC]

new image url

[BenR1312]

Can confirm this one one too, 1.0.11 is okay. it looks like the change in 1.0.12 brought in the bug.
my guess is its related to the watcher, but im not 100% sure.
4cc36d1#diff-e4b788d8c6b16c9e8ceb19edc10a5066R34