LyX expectedly gives the following warning:
TextClass.cpp (1385): The layout does not provide a list command for
the float `sidebar'. LyX will not be able to produce a float list.
This issue was reported to the maintainer. This commit is consistent
with
00f7a95f.
# the float `sidebar'. LyX will not be able to produce a float list.
#
check_load/templates/acmart
# the float `sidebar'. LyX will not be able to produce a float list.
#
check_load/templates/acmart
+export/templates/acmart_lyx23
# Failing LyX2LyX conversions for old versions:
#
# Failing LyX2LyX conversions for old versions:
#