MolView is unable to generate the correct structure of hydroxypropadiene. It instead generates the structure of acrolein (which has the same molecular formula). Why is this so? Is it because hydroxypropadiene is so unstable that the calculations done while generating the structure degenerate it to acrolein?
MolView is using the default GLMol renderer. Switching to JMol or ChemDoodle does not change the structure.
EDIT: The exact workflow I used was open MolView, delete the caffiene molecule, draw this molecule and click the 2D to 3D button. The generated URL is
http://molview.org/?cid=7847, which, when pasted in a browser, interestingly redirects to Acrolein and not the compound that was drawn.