Hi there!
The simple way for me to find that problem is for you t build a sample project replicating the error, so I can take a look(can send me a link with the project via forum PM or through here if you want).
Another way is:
From my understanding, you created a bitmap font, put it on the sample project and it worked. But when you import the Bitmap and Eli book plugin, into your own project, your bitmap font does not load. And instead, is using the default font. When that happens, press F12 or F8, go to the CONSOLE tab and send me a screenshot of the error trace.
I will take a look at the tile size bug. I have never seen it before.
You said you tried on other fresh projects, so I presume is not a plugin conflict. So will be waiting for you to answer me back.