Bad drawing of end points for dative bonds

[DavidACosgrove]

Describe the bug
When drawing the ferrocene in the V3000 below, the ellipses in the SVG marking the end points of the dative bonds are very large and basically wrong.

To Reproduce
'''
ferrocene
ChemDraw01072310592D

0 0 0 0 0 0 V3000
M V30 BEGIN CTAB
M V30 COUNTS 15 14 0 0 0
M V30 BEGIN ATOM
M V30 1 C 0.619616 1.206807 0.000000 0 CHG=-1
M V30 2 C 0.211483 1.768553 0.000000 0
M V30 3 C -1.283936 1.861329 0.000000 0
M V30 4 C -1.796429 1.358429 0.000000 0
M V30 5 C -0.634726 0.966480 0.000000 0
M V30 6 C 0.654379 -1.415344 0.000000 0 CHG=-1
M V30 7 C 0.249886 -0.858607 0.000000 0
M V30 8 C -1.232145 -0.766661 0.000000 0
M V30 9 C -1.740121 -1.265073 0.000000 0
M V30 10 C -0.580425 -1.662922 0.000000 0
M V30 11 C 1.759743 0.755930 0.000000 0
M V30 12 C 1.796429 -1.861329 0.000000 0
M V30 13 Fe -0.554442 0.032137 0.000000 0
M V30 14 * -0.601210 1.478619 0.000000 0
M V30 15 * -0.537835 -1.172363 0.000000 0
M V30 END ATOM
M V30 BEGIN BOND
M V30 1 1 1 5
M V30 2 2 4 5
M V30 3 1 4 3
M V30 4 2 2 3
M V30 5 1 1 2
M V30 6 1 6 10
M V30 7 2 9 10
M V30 8 1 9 8
M V30 9 2 7 8
M V30 10 1 6 7
M V30 11 1 1 11
M V30 12 1 6 12
M V30 13 9 14 13 ENDPTS=(5 1 2 3 4 5) ATTACH=ANY
M V30 14 9 15 13 ENDPTS=(5 9 10 7 8 6) ATTACH=ANY
M V30 END BOND
M V30 END CTAB
M END
'''

Expected behavior
Small circles round atoms 1-5, 6-10.

Screenshots

Configuration (please complete the following information):
Master branch, built from scratch on macOS.

Additional context
I will now go and fix it.

[greglandrum]

Fixed in #5946