Problem rendering some molecule

[Neroptique]

What happened?

Hello,
I discovered issues trying to render some molecules.
For now on I had issues with allene and propyne molecules.
While allene is not rendered at all, propyne is represented as a linear propan.

I'll update my post if I found other molecules with this kind of issues.

What did you expect to happen?

Correctly drawn allene and propyne such as :

and :

How can we reproduce it (as minimally and precisely as possible)?

To reproduce :

C=C=C
CC#C

Result :

``

Anything else we need to know?

OS: Ubuntu 22.04.5 64-bits

Plugin version

0.4.0

Obsidian version

1.6.7