I'm writing a simple project using Gatsby, Grommet and React, basically reads a markdown file then renderer; following the gatsby tuturials.
Everything is Ok, except on the first load of any page.
The main content disappear soon after it render itself. If the JavaScript is disabled, the issue doesn't happen. So, I think I committed some mistake that impedes React's rehydration.
Bellow there a link to a video of the issue happening, the source-code and a public URL for test.
I'm pulling my hairs out, thanks in advance for any tip!
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