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Hi Amanda and others.
OK I think I have resolved the problem now, but I thought I should explain what it turned out to be. This is the accessibility forum after all and this problem could happen to other users. Perhaps the WordPress accessibility team might also need to give some thought to it as I will explain shortly.
Log story short, I did do a clean install of WordPress 4.7.3 and got the same problem. Then I did a clean install of WordPress 4.7.1 and again got the same problem, ie the help and screen options buttons were not there in the admin screen. I knew I had used this older version of WordPress with no problem, so this tended to suggest something had changed with my PC setup rather than WordPress itself. It also helped to know that Amanda was also using NVDA and Firefox and was not having this problem with WordPress 4.7.3. Amanda referred to the need to make sure the window is maximised, and I was consistently making sure of this. I also went to another PC I sometimes use that also has NVDA and Firefox, and here the help and screen options buttons were displaying correctly, so back then to my laptop to figure out the problem.
It turned out to be the orientation of my laptop display. On my laptop I can do ctrl/alt/left, right, up and down to orient the display visually in four directions. If it is oriented correctly, or up side down, the buttons appear. If it is oriented sideways one way or the other, the buttons disappear. The reason why I suggest the WordPress accessibility team might want to give this some thought is that I can’t personally think of a situation where you would want these buttons to disappear, no matter what screen size you are using.
Finally I should comment that it is quite easy for a blind person to accidentally use one of these hotkeys and get their screen oriented in a strange way. These same hotkeys are used for navigating cell by cell when in a table. You only have to use these keys by mistake when not in a table and you could easily end up with your display oriented the wrong way, but you don’t see it and normally it makes no real difference to you as a user.
Anyway that is the explanation and it is good to have the buttons back where I need them.
Cheers.
Hi Amanda.
Yes I also use NVDA and Firefox and I think they are both the most recent stable releases. Right now I can activate all the buttons that expand various panels on the dashboard and I can activate the menu button that brings up the menu for posts, pages, plugins, settings etc. So all that is working but the two buttons for help and screen options are just not there.
Firefox has a nice add-on called Document Inspector I think which I find reasonably accessible when using NVDA. Using the document inspector, I can see that the buttons are there but are in a div element that has its display attribute set to none, which I guess explains why they are not visible. So this suggests some sort of CSS issue.
I have also tried disabling plugins but with no joy.
However you say these buttons are working for you. Are you using WordPress 4.7.3?
Perhaps my next step is to start with a clean copy of WordPress and see if there is anything specific that I am doing while developing a new site that causes these buttons to disappear.
Cheers.