Testing out the new SVG search discriminator (loving it btw) and noticed that when I perform an image search, then enable a discriminator (for example SVG only), the share search button will disappear totally. If I reload the page the button comes back, but any further changes to discriminators (whether turning them off or on) makes it disappear again, requiring a reload. Does not happen with the discriminators on the far-left, "Latest", "HD", and "GIF"; these seem to reload the page automatically.
Would expect for the share search button not to disappear.