Well, I'm one of them.
When I click on my photo at the top right corner, a drop down menu appear.
But the problem is I cannot find the "Log out" option in the drop-down menu.
When I run my cursor down the list of options, the furthest remark which I can see from my computer screen is "Keyboard shortcuts", as shown below.
In other words, the "Log out" option is blocked by the taskbar at the bottom of my PC.
So how do I sign off from my Twitter account?
Sign Off Twitter Without Log Out Option Drop-Down Menu
Here are two ways how I log out from Twitter.
First: Twitter Logout Page
I open a new tab of my Mozilla Firefox, and type in this URL on the address bar.
https://twitter.com/logout
It will show a white page with the "Log out" orange color button.
I just click on it.
That's all.
Two: Clear Cookies
1. Click on "History" on the toolbar.
2. A drop-down menu appears.
3. Scroll down your cursor until "Clear Recent History..." and click on it.
4. A "Clear All History" box will pop up.
5. Click on the "Clear Now" button.
6. Instantly you can see your Twitter account log out on its own.
7. That's how I log out of Twitter of my computer, without the "Log out" option.