2D in 3D - selection in 3D not as volume visible

3D can glitch and not appear large/huge segments like the Cell Body you have selected there. Refresh fixes it. It is related to a memory leak bug.

Also dunno what you have but 32 bit OS/browser makes it worse. Win 10 x64 is recommended by HQ

Also Chrome/firefox are best, IE/edge/opera/safari are not supported.

Hope this helps. :slight_smile: