Attribute table docking appearance in ArcGIS Pro 2.5 or 2.6 is not consistent when opened as opposed to the previous version.

Solución alternativa

By opening the attribute table multiple times at 80% of the map make the user needs to change the size every time referring to the attribute table and working with the map.

To change the size of the appearance of the attribute table in the map, put the arrow on top of the attribute table until the arrow turns into an Up-Down arrow and change the size of the table.

Pasos para reproducir