A test from a recent file, KOMA-Script_Book.lyx, uncovered this
issue. It is an old routine so not critical to fix.
The following is the diff that prevents convergence:
\begin_inset Newpage cleardoublepage
\end_inset
\end_layout
\begin_layout Standard
If convert_bibtex_clearpage(document) in lyx_2_0.py is commented out, then
the test passes.
# https://www.mail-archive.com/search?l=mid&q=20200915233446.atwbyulny5gsbtyi%40tallinn
export/examples/ru/Presentations/Beamer_lyx(16|20)
+# The following is the diff that prevents convergence:
+#
+# \begin_inset Newpage cleardoublepage
+# \end_inset
+#
+#
+# \end_layout
+#
+# \begin_layout Standard
+#
+# If convert_bibtex_clearpage(document) in lyx_2_0.py is commented out, then
+# the test passes.
+# Since this is an old export (and additionally the issue is an old export routine)
+# it is not critical.
+export/examples/Books/KOMA-Script_Book_lyx16
+
# ==============================================================
Sublabel: ert