This has been happening for a while (months I think), but it's not consistent. Sometimes when I try to add an attachment to a post the button is "not there". I have that in quotes because if I click where it's supposed to be the dialog comes up and I can attach the file. I've never noticed this problem on either laptop I use. It's happening now in fact.
"Your thoughts are seeds, and the harvest you reap will depend on the seeds you plant." - Rhonda Byrne
I've had this going on intermittently for a long time. If I don't see the attachment button I just rotate my phone from landscape to portrait or portrait to landscape (it's set to auto-rotate in settings) and it shows up again. I've just gotten used to it I guess.
Had to go portrait to landscape and back just now.
With forty shades of green, it's hard to be blue.
Garg 'nuair dhùisgear! Virtutis Gloria Merces