No parsing scene, preparing geometry etc. whenever using render region during INTERACTIVE RENDERING

During interactive rendering, the process of Parsing Scene, Preparing Geometry, etc. occurs every time I use the Render Region feature.

This behavior is quite inconvenient, as the scene reloads completely even when the camera hasn’t been moved and I’ve only defined a render region.

Is it really necessary for the scene to reload each time a region is selected. Would it be possible to start rendering the selected section without waiting for the PARSING scene and PREPARING GEOMETRY?