Text Frame Style Issue - Need Help Please

It's not intuitive. I wrote that article for a student who was struggling to get his head wrapped around it. Glad you are back on track.

~Barb

Based on how the edges are extending beyond the frame edges, I'd guess you have paragraph shading enabled as a default. 

It will take two steps to completely disable it:

1. Click on the text with the Type tool, change to the Paragraph view of the Control Panel and uncheck Shading.  If that works, then I guessed correctly. You can do the same thing to turn it off on any other existing frames.
2. Then choose Edit > Deselect All and uncheck shading one more time to turn off the default for all future text frames.

Try adding a few more boxes and adding some text and let us know if that works for you.

~Barb

It looks as if you may have inadvertently set either a paragraph or object style.

With no object selected anywhere in the document, look at your active paragraph style. If it has a + mark indicating an override, right-click it and use the various Clear options to clear those overrides until the + goes away.

More likely, your [Default Text Frame] style in Object Styles will have that overrride marker. Do the same thing there — right-click, clear all overrides until it goes away. That should get rid of the black bar on all new text frames.

It's a subtle aspect of ID that it sets new defaults when you change any setting while nothing is selected. If you have no document object selected and set a 1pt red stroke, everything you create after that point will have a 1pt red stroke. This can be useful if you know how to use it, but most often it's an inintended mistake, and you clear it by selecting nothing and then (for example) setting the stroke to 0,  or the color to black, or such.