General issue: Incorrect beams rendering with unknown cause

[bel28kent]

This issue is for beams that are not rendering correctly even though there are no apparent errors in the kern (no joining in the middle of the measure, L and J tokens match the print edition.)

[bel28kent]

scriabin-op64.krn

correct beams:

current kern:

!!!COM: Scriabin, Alexander
!!!OTL@@FR: Sonate no 7
!!!OTL@@EN: Sonata No. 7
!!!OPS: 64
!!!ODT: 1911–1912
!!!AGN: Sonata
**kern	**kern	**dynam	**kern	**dynam	**kern	**dynam
*staff4	*staff3	*staff3/4	*staff2	*staff2/3	*staff1	*staff1/2
*Ipiano	*Ipiano	*	*Ipiano	*	*Ipiano	*
*clefG2	*clefG2	*	*clefF4	*	*clefG2	*
*k[]	*k[]	*	*k[]	*	*k[]	*
*X:	*X:	*	*X:	*	*X:	*
*M4/8	*M4/8	*	*M4/8	*	*M4/8	*
=2	=2	=2	=2	=2	=2	=2
*	*	*	*^	*	*^	*
2r	2r	.	8CC	8CCL	.	24B-XLL 24d-X 24a	8r	.
.	.	.	.	.	.	24B- 24d- 24a	.	.
.	.	.	.	.	.	[24B- [24d- [24a	.	.
.	.	.	8ryy	48ELL	.	24B-] 24d-] 24a]	12r	.
.	.	.	.	48FF#XJJJ	.	.	.	.
.	.	.	.	12r	.	24B- 24d- 24a	.	.
.	.	.	.	.	.	24B-JJ 24d- 24a	48r	.
.	.	.	.	.	.	.	48a	.
.	.	.	4ryy	8r	.	24r	[8ee	.
.	.	.	.	.	.	24B-LL 24d- 24a	.	.
.	.	.	.	.	.	[24B- [24d- [24a	.	.
.	.	.	.	48ELLL	.	24B-] 24d-] 24a]	12eeL_	.
.	.	.	.	48FF#JJJ	.	.	.	.
.	.	.	.	24r	.	24B-J 24d- 24a	.	.
.	.	.	.	48r	.	48r	48eeLL]	.
.	.	.	.	48AAA-X 48DDn 48BB--	.	48B--Jkk 48dn 48b--	48dd-XJJJ	.
*	*	*	*v	*v	*	*	*	*
=3	=3	=3	=3	=3	=3	=3	=3
!!!system-decoration: {(*)}
!!!filter: flipper -a
!!!RDF**kern: > = above
!!!ENC: Bryan Jacob Bell
!!!END: November 2021 to April 2022
!!!PED: Günter Philipp
!!!PTL: Ausgewählte Klavierwerke (Edition Peters)