Post any defects you find in the released or beta versions of the ImageMagick software here. Include the ImageMagick version, OS, and any command-line required to reproduce the problem. Got a patch for a bug? Post it here.
Well the title states it all. Ran different tests, montage does not display any error messages, but the title just doesn't appear any more on the final image anymore. It used to work fine on Fedora 26, but I had the bad idea of upgrading.
Perhaps you need to update your IM version. If my command fails after updating, then please upload your input image to some free hosting service and put the URL here.