Your client (presumably a real one) is including both of these tags:

[

"e",

"d1d65af7f31e675e6addd8586b195a52d123224256530a70681066ca2947a523",

"mention"

],

[

"e",

"9919c19ef2bc6d3bc3dfe7b9fb8b6fe5ac1d62048871210ba9eec313bb1388e4",

"",

"mention"

]

One is straight up malformed (the "mention" marker appears in the wrong position).

The other one means a quote is being mentioned or embedded (effectively the same meaning as the "q" tag).

The referenced note is one above in this thread: nostr:nevent1qvzqqqqqqypzqwlsccluhy6xxsr6l9a9uhhxf75g85g8a709tprjcn4e42h053vaqqsfjxwpnmetcmfmc0070w0m3dh7ttqavgzgsufppw57ascnhvfc3eqj3mfsq

I suppose you didn't mean to mention that note, much less through a malformed tag.