Fix a small bug in which the text in the revisions could be lost due to raising the colored tags when viewing an open graph.
Fix a small bug in which the text in the revisions could
be lost due to raising the colored tags when viewing an
open graph.

bk: 42af51dcnsQoQzIVkt-k2e2gZvJazQ
bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper