Vue js 2.6.13 component not rendering

[litt1e-p]

Version

2.6.13

Reproduction link

https://codesandbox.io/s/vue-component-2613-5hzzy

Steps to reproduce

After upgrading vue js from v2.6.12 to v2.6.13 some components don't get render and no warning message or error message in the console. but when I try to downgrade to version 2.6.12, the component successfully render.

Component code that doesn't get render using v2.6.13

What is expected?

should render the component

What is actually happening?

component does not render

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why is the component not rendering, but it works when give them a wrapper container , here is a demo

[jacekkarczmarczyk]

#12104