If you drag the composer bar up to its fullest extent, it becomes impossible to drag it back down again.
The header overlaps the ‘grab bar’ of the composer, making it ungrabbable. The only way to get the composer back to where it should be is to resize the window (if you can) or resize the text. This is a bit of a pain, and beyond the skills of many users!
This is in Chrome on Desktop (Mobile is fine). Sorry I haven’t tested it more widely.
Does the issue happen for you here on Meta?
I can’t reproduce it here or locally.
Are you on the latest?
If not, can you try updating.
Can you try safe mode?
your.site.com/safe-mode
Can you post a link to the site you’re seeing the issue on?
Yup - it happens in Meta too:
But not with the Focused Sidebar theme, which is why I suspect that you don’t experience it.
Sorry, I’m still unable to reproduce the issue with or without the sidebar.
Can you please try an incognito window? If it still happens there, can you please share more details about the devices you’re seeing this issue on?
OS/browser/device if possible please.
I get it on my 3 different instances, including on safe mode, and here on meta.discourse.org with the Light theme.
This is via Chrome on ChromeOS. When I get a chance I’ll try it on some other browsers / devices.
Would take a screen recording but it has glitched out (new feature in ChromeOS 
). Will add one soon.
Just to follow up, but I don’t suppose this has magically resolved itself in the meantime, has it? 
No it hasn’t - it is still very possible to get the composer stuck under the header on Chrome (on a Chromebook) on my machine.
However, the recent improvements to the fullscreen composer have removed the need to drag the composer up high:
This should be fixed now, can you confirm? The relevant commit is this one: FIX: Ensure composer grippie stays visible (#18396) · discourse/discourse@37b043f · GitHub
I’ve just updated to tests-passed but still have the same problem.
On the bright side, I’ve now worked out how to take a short video of it (with me having to change the zoom to make it reappear):
This is still on Chrome, on Chrome OS (latest stable build).
