Help idk what has caused this, when I rotate the object, there is no line!
Is this a glitch
Please can you explain more (and/or post a screenshot)?
For some reason my phone can't submit the photo, the submit button dissappears
Sorry, we can;t reproduce that so it's probably a problem specific to your phone (maybe try upating Android)
I think I know what happened
When I used a newer phone, the equation seems to be quite thick
I think the equation have been "duplicated" thus making it a thick line
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