If there are times that depending on the search engine, I think it's because the cursor looks very big, but I don't know why 😅. In such a case the line is generated in the upper left corner.
yeah I ran into a similar issue a few years ago, I found if you cap your game to either 30 or 60 fps in engine, it suually helps avoid those issues for web builds! Thanks for sharing your game though, I always enjoy these type of draw pathway type of games.