Some legacy clients using the compat tree will fail hard if an entry has multiple uid (some will just pick the first). The compat tree should be configurable so that only a single uid is returned even when UPN support is enabled globally. An ID View approach may be fine.
Duplicate of https://fedorahosted.org/freeipa/ticket/6252
Metadata Update from @simo: - Issue assigned to someone - Issue set to the milestone: 0.0 NEEDS_TRIAGE
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