Quasar: 14.7
OS: deepin Linux
Node: 9.4.0
NPM: 5.6.0
Browsers: Chrome 63.0.3239.84, Firefox 57.0.4
Any other software related to your bug:
An unexpected border-top shows up when using q-field "helper" or "error-label" props
No border
Just used the props

Can you please share the code that produces this problem?
If this is not possible then please attach a screenshot of the chrome inspector (with styles) when you have the helper or the error-label selected in inspector.
I've made a component, which has this snippet below, but when I run the yarn dev it happens, but using the same component inside storybook it works fine.
<q-field
icon="description"
:error="validation.hasError('entityName')"
:error-label="validation.firstError('entityName')"
class="col-xl-4 col-lg-4 col-md-6 col-sm-12 col-xs-12"
>
<q-input
v-model="entityName"
@keyup="unmaskStr(entityName)"
:error="validation.hasError('entityName')"
float-label="Entity name"
/>
</q-field>





Thank you, I found the problem.
Could you give me some info about this?
It looks like the control element (QInput in this case) is not registered properly inside the QField when using dev/HMR.
You can check this by doing a little test for me:
yarn devPlease let me know if this is what happens.
Nope, it's not. I've seen this behavior with QModal, but not with QField.
PS: I ran yarn build command already and the took a look at the dist version, the same problem.
Fix available in next Quasar beta. https://github.com/quasarframework/quasar/pull/1469
Thanks, @rstoenescu!