Changes not syncing

[steveo994]

Describe the bug
We are able to connect, and the client player can see when the host pauses and unpauses, but any changes made by either player are not syncing to the other in real time. If the client uses the /sync command, it will update any changes up to that point, but any changes made in real time are not updating like they used to.

To Reproduce
Steps to reproduce the behavior:

1. Client connects to host
2. Try making any changes to the map (roads, zones, landscape, etc.)
3. No changes visible on host side (or vice versa for client when host making changes to their side)
4. Client types /sync and any changes made by the host are then visible once the sync is complete (but any further changes will not update until /sync is run again).

Expected behavior
Any changes to the map (roads, zones, etc.) be updated in real time without needing to continually use /sync.

Active DLCs
Match Day, Pearls, After Dark, Snowfall, Mass Transit, Nat Disasters, Green Cities, Parklife, Industries, Campus, Sunset Harbor

Active mods
UnlimitedOilAndOre, UnlockAll, 2x4 Parking Lot, Sunken City Plaza, CableStay32m, RetractBollard, RoadPlanter1, StoneBollard, Wood8mEPillar, WoodBollard, Suburban Train Station, Public Library, Simple Inner City Metro, Bus Station_sub_building_0, Bus Station

Versions
Type /version into the in-game chat and paste the version numbers here:

• Mod version: most recent
• Game version: most recent

Additional context
We were running into the problem where the client was getting a mod mismatch error when joining every time, even though the list of mismatching mods was blank. We found out that the client also needed to have subscribed to mods and assets in the exact same order as the server in order to join, seems to be the same problem as #288