Shapes in the Document Stencils are copies of the original, master shape. When a shape is dragged and dropped from a stencil onto a drawing page, Visio makes a copy of that shape. This resides in the Visio document and is always visible. If, for some reason, that shape gets altered, then Visio tags it with a version number. One of the shapes giving you difficulty that appears to be the "Start Message". Your post shows version "34", but, doesn't show the complete listing. It may be that whatever version your using has been corrupted. I tried searching for that shape and could not locate a stencil containing it within V2019 Pro.
You may need to find the original version of the shape and do a replacement. If you have prior version of your file, does it contain a good version of the shapes in question? A copy/paste might solve your problem.