In 3D, I use the "centering hole" drilling tool on a part, and I set the "tolerance / precision" to "fit with tolerance", then choose for example Ø6 H7 (xxx), to have the dual display.
When I do my drawing and use the "symbol for drilling" tool, it tells me that it's a Ø6 H7 but with a tolerance of 0... ?
Already in 3D when I choose the H7 tolerance, it doesn't display the IT while it does it immediately under the drawing....
Personally, I would start looking at the parameters of the number of decimal places, differentiating the general parameters from the document parameters. It seems to me that if we put zero decimal places, it doesn't display everything. The number of decimal places remains attached to the object even if the display does not show them because of the setting. for example, you put zero decimal places in the 3D model and 4 decimal places in the MEP