bobingabout opened the ticket and wrote:

if you replace a single engine with a 2 headded, the last wagon is sold, but replace the other way, and the train shrinks. simularly, with the variable wagon length, replace small wagons with large wagons and the train only replaces it to be the maximum of the length it was before, in UKRS with 8 small wagons, it only builds back 5 larger ones. however, do it the other way, and you only have 5 small waggons. i think what it should do in this case is consider the length the train is now (eg, require a 3 tile station, which is length 6) and replace the wagons/engines to be the same length.

so when i replace my 7/8 engine with a 8/8 engine, and 8x 5/8 wagons with 5x 8/8 waggons, it normally removes a wagon, making the new train only have 4 wagons when it should have 5, all because the engine is 1/8 of a unit short, this shouldn't happen.

Reported version: trunk
Operating system: All

This issue was imported from FlySpray: https://bugs.openttd.org/task/67