The problem is that both of them should make a small "Post Tags" widget appear in both "New Page" and "Edit Page" views (like on the first screen here).
But they don't. Nothing shows up.
What makes this case even more interesting, is that when I have "TagPages" plugin activated, and I use "Quick edit" option, I can tag the Page using a textbox located there - which proves that the plugin works.
When I try to use these plugins on a clear WordPress installation, everything is fine.
Here is how my "Edit Page" view looks like.
You should notice that it differs a little from a standard look - the page content editor is on full width (I'm not sure why), I also turned off the visual editor. May any of these be somehow related to the problem?
You can also see that there is a widget from "WordPress SEO by Yoast" plugin, so there are plugins that are showing their widgets in this view.
Any advices will be appreciated as well as asking for additional details.
Thanks in advance,