Search in
Sort by:

Question Status:

Search help

  • Simple searches use one or more words. Separate the words with spaces (cat dog) to search cat,dog or both. Separate the words with plus signs (cat +dog) to search for items that may contain cat but must contain dog.
  • You can further refine your search on the search results page, where you can search by keywords, author, topic. These can be combined with each other. Examples
    • cat dog --matches anything with cat,dog or both
    • cat +dog --searches for cat +dog where dog is a mandatory term
    • cat -dog -- searches for cat excluding any result containing dog
    • [cats] —will restrict your search to results with topic named "cats"
    • [cats] [dogs] —will restrict your search to results with both topics, "cats", and "dogs"

SeamlessTravel ClientVisibleLevelNames Breaking replication

Hi there, We have an issue with SeamlessTravel.

  • Setup:
    • No transition map set

    • Travelling to the same map.

  • If after seamless travel the client finishes loading the level first it will send ServerUpdateLevelVisibility calls with loaded level names.

  • This adds them to the NetConnection's ClientVisibleLevelNames array.

  • The server finishes SeamlessTravel and calls PreSeamlessTravelGarbageCollect, which calls UNetConnection::ResetGameWorldState

  • This then clears out the ClientVisibleLevelNames array

  • Replication is now broken for any actors in levels due to the server not thinking the client has those levels loaded and visible. UNetConnection::ClientHasInitializedLevelFor returns false and nothing is replicated for these level actors.

It seems like there should be some kind of replication pause or other controls that prevent the client from sending RPC's like this while the server is still loading. Is there a correct way to solve the problem? Artificially delaying clients to try to give the server more time to load is risky due to different PC specs.

Side note: This seems to have gotten worse for us in 4.21, though that could just be a coincidence.

Any help is appreciated,

  • Chance

Product Version: UE 4.21
more ▼

asked Feb 05 '19 at 11:56 PM in Bug Reports

avatar image

Chance Lyon
1 2

avatar image Jeff A ♦♦ STAFF Feb 06 '19 at 06:10 PM


We've recently made a switch to a new bug reporting method using a more structured form. Please visit the link below for more details and report the issue using the new Bug Submission Form. Feel free to continue to use this thread for community discussion around the issue.



(comments are locked)
10|2000 characters needed characters left
Viewable by all users

0 answers: sort voted first
Be the first one to answer this question
toggle preview:

Up to 5 attachments (including images) can be used with a maximum of 5.2 MB each and 5.2 MB total.

Follow this question

Once you sign in you will be able to subscribe for any updates here

Answers to this question