fix($core): #2627 Dup ID violates HTML5-4#2650

Merged

bencodezen merged 4 commits intovuejs:masterfrom adico1:#2627_3_10082020

Oct 13, 2020

+44-32

Commits on Oct 8, 2020

Commits on Oct 9, 2020

fix($core): vuejs#2627 Dup ID violates HTML5-4
adico1
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