Component does not render in prod but does in debug, no errors or warnings

[Trojaner]

Version

3.0.6

Reproduction link

http://plnkr.co/edit/9KJo5ozJ86xh9I8u

Steps to reproduce

1. Open repro
2. Observe how the bug component does not get rendered (no errors or warnings) (it should output 6 "a"'s side by side)
3. Comment the following in line 17 in bug.js, see how the component gets rendered:

if(this.values) { }

4. Uncomment the related code again to break it again
5. Switch to debug module: replace vue.esm-browser.prod.js with vue.esm-browser.js in index.html
6. Component gets rendered again despite the related "if" still being there

What is expected?

Component should render if using prod module; behavior should not be inconsistent with prod or debug module

What is actually happening?

Component does not render in prod mode, no errors or warnings in prod or debug mode

[edison1105]

just tip here.
accessCache['values'] should not equal AccessTypes.OTHER

if if(this.values) { } exec before return { values: vals, autoFocusIndex };
the accessCache['values'] will be set to AccessTypes.OTHER in PublicInstanceProxyHandlers.get.
so values is incorrect when next time access values

should we just remove

} else if (!__FEATURE_OPTIONS_API__ || !isInBeforeCreate) {
   accessCache![key] = AccessTypes.OTHER
}

or retry to get value when accessCache[key] === AccessTypes.OTHER