Something to note with TRON and Guardians in WDW, according to pretty reliable sources construction crews are finishing the exterior of the attractions so that it doesn't look like a construction site from guest areas, they are taking all crews out of the project until further notice. So for example, they are focusing on building the canopy for TRON, then when they are finished with that in early 2021, they will take all crews out and leave the interior unfinished until further notice.
Wonder if that's what they are doing with Runaway Railway. Building the show building and the mountain facade so Disneyland doesn't have a huge construction site looming over the park.