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+Bugfix: Deterministic audio cover art thumbnails
+
+The thumbnails service now selects audio cover art deterministically: it prefers
+the tagged front cover and falls back to the first embedded picture. Previously
+the picture used for the thumbnail was non-deterministic when an audio file
+embedded multiple pictures (for example a front and a back cover).
+
+https://github.com/opencloud-eu/opencloud/pull/3208