[kovarex][0.18.37] Desync problems with nested blueprints

[therhodanist]

After shuffling a few Blueprints into nested Books i stumbled upon a problem placing them. If the blueprints are placed via non-direct bp-item(bsp. rails->straight) then the game desyncs and the server places ghost of a completely different blueprint at that position, if the bp is placed after navigating directly to it in the book and taking it from there that problem does not occur.

[therhodanist]

To Clarify

if placed via the book, this happens

2020-07-29_19-02-20_factorio.jpg (741.71 KiB) Viewed 2022 times

after reconnecting, this is the bp the server placed

2020-07-29_19-03-26_factorio.jpg (881.26 KiB) Viewed 2022 times

but if taken directly from the library

2020-07-29_19-05-26_factorio.jpg (733.5 KiB) Viewed 2022 times

the right ghosts are placed without desync

desync report(i think logs are included)
https://mega.nz/file/urRBiKyC#26Uc_DNes ... rPU3N13KzU

[boskid]

I had to stretch every possible muscle including the ones that moves my eyes to find the cause of this desync and i found it.
When you return to MP server on which you have already been once, activeIndex in book from your shelf is not synced so if you happened to play other games in between and was scrolling your book, this desync will happen.

[boskid]

Thanks for the report. Issue will be fixed in 0.18.39