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The MolDraw Community helps students, researchers, educators, and computational chemists discuss chemical structure drawing, editor workflows, molecule export, 3D visualization, spectra tools, and requested improvements to the free MolDraw web app.

What can I do here?: Read public discussions, post workflow questions, reply to threads, upload images or short videos, and upvote ideas after signing in.
How are feature requests handled?: Users can upvote requests. Admins can mark requests as new, under review, under progress, or done.

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Maxim1 Janzen

Maxim1 Janzen 35 karma

Student · 2026-09-18 16:07 UTC

Some bugs

Hi, i really like your update but there is a problem with some things. First i realized now that sometimes editing/deleting posts does not work. In the pictures you can see several problems: - wrong 3d structure at the chiral center when changing the wedge direction - weird LP placement of third LPs (didnt test more than 3) - a button to add one to all of them would be nice so not each atom would have to be clicked - replacing atoms with an h fails and a methyl group is added instead - some lps are drawn wrong when choosing electron flow - in electron flow mode it is not always possible to choose the middle of a bond as endpoint - when a bond is chosen as starting point and an atom as endpoint it often points wrongly which corrects itself when some atoms are deleted (no picture, but could be done on request) Then it is also slightly annoying that enter in the forum results in the post being posted immediately as it is usually used for newlines. It would be nicer if you could only post by clicking the button or have a confirmation before hand. Thanks for your dedication and continued updates. Best Maxim

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Maxim1 Janzen 35 karma

Student · 2026-09-18 15:47 UTC

Some bugs

Hi,

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Maxim1 Janzen 35 karma

Student · 2026-09-18 15:47 UTC

Some bugs

Hi, I like the new version a lot so far. I have experienced a few small issues and wanted to let you know. First in the new lone pair feature all of the lone pairs seems to be needed to be added manually by clicking on the atoms, it would be nice if they could be turned all on with one button. Then some are placed weirdly for example when there are 3 LPs the third clashes into the first. I dont know how the placement looks like with even more LPs. When drawing the new electron flow arrows i often cannot snap them to the middle of bonds, which would be nice. When drawing them from the middle of a bond to somewhere else, they are also often mangled, but his gets fixed when deleting some atoms (i didnt include a picture of that, please inform me if you need it) Finally i observed that the 3d geometry is sometimes wrong. I took the initial example that you have and made H the H at the chiral center wedge up, but it is not reflected in the 3d depiction. also i cannot replace atoms properly with H by pressing h and clicking on them, but always a methyl group is added in that case.

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