[7.x] Add known issue to 7.7.0 release notes for #66146 (#66693)#66889

Merged

gchaps merged 1 commit intoelastic:7.xfrom gchaps:backport/7.x/pr-66693

May 18, 2020

+5

Commits on May 18, 2020

Add known issue to 7.7.0 release notes for elastic#66146 (elastic#66693 )

pgayvallet
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gchaps
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