Is it just me or does each new version of SW bring an array of new weldment bugs.
2019 SP5

1. Individual sheet metal body flat patterns sometimes give wrong quantity. The quantity is correct in Cut list Table. Sometimes the quantity will be correct if a note linked to "QUANTITY" is attached to a flat pattern. Then it will change to "1". Sometimes this can be fixed by selecting a different instance for the flat pattern. Sometimes it can't. Sometimes if you fix it, it will revert back to "1" after you reopen drawing. Fun.

2. If the linked "Sheet" (I have no idea of what the point of Sheet is for a description) is unlinked and changed sometimes it will randomly change itself back to linked. Sometimes if the description is changed it won't update in the drawing unless you link it, unlink it, and then change again. Sometimes even if this is done the description in the drawing stays as Sheet. More fun.

3. Every time any change is made to sheet metal bodies, the overall colour of the part changes to the appearance of the sheet metal material.

To the best of my knowledge, none of these bugs were present in SW 2017.