Now this button is located at the bottom of the dialog windows. Sometimes it is been covered or just disappears.
One solution is like evernote web clipper, change its position to the top.
Yes, I agree and I think there’s a GitHub issue about this.
Even better, given you have to select the type of clip which implicitly confirms the action, just remove the Confirm button. The worst that will happen is you either clip something you didn't mean to (unlikely if you have got this far) or clipped it in the wrong format.
It's always good UI practice to remove unnecessary user actions. Confirm buttons are very rarely useful. If you can undo the action fairly easily (and in this case you can), there is no need to confirm. Especially if you confirm far more often than not.
Isn't this button useful, anyway? Because it gives you the chance to edit the title of the note and then click "confirm". The title can of course be modified within Joplin, but clipping is greatly facilitated if you can do it all within the browser and don't have to switch applications.
There's no reason why the "Title" box can't be present all the time. It's sent to Joplin for all choices anyway, and only hidden for screenshot - not sure why.
That's right: I could edit the title first, then choose one of the clipping options, and that's it. As I belong to the 'generation save button', I don't mind pressing "confirm", though 
Any updates on this? I think agree with removing the confirm button. It's very inconvenient and un-intuitive.
Personally I'm pro confirm button. But if you remove it then the title editing field needs to go at the very top of the dialogue. In English we read top to bottom and it doesn't make sense to have something you should do first (selecting the folder and changing the title) below the buttons that will end the interaction.