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"

UMG: Replacing a widget with a child of a type with a variable creates hundreds of unwanted variables

When you create a widget component - of a type that comes with a variable by default - under another component, and then replace that parent component with its child, a large number of unwanted duplicate variables are created. The examples below all use Named Slot, but the same issue will also occur with other types of widget component, such as Images, ComboBoxes, and so on. It does not appear to happen for widget types that do not have a variable enabled by default, such as Texts.

Steps to reproduce:

  1. Create a new widget

  2. Drag a Named Slot component underneath the default Canvas Panel

  3. Right-click on the Canvas Panel and select Replace With->Replace With Child

  4. Switch to the Graph view

Expected Result:

  • There should be one variable for the Named Slot

Actual Result:

  • There will be a large number of variables of type "Named Slot", named NamedSlot_1, NamedSlot_2, etc.


  • The number of variables created appears to depend on how long the context menu was left open before selecting "Replace With Child". I left the window open for ten minutes with the context menu open and the mouse hovering over "Replace With Child", and it created over 60,000 variables when I finally clicked it.

Product Version: UE 4.18
more ▼

asked Jan 13 '18 at 05:18 PM in Bug Reports

avatar image

Nameless Voice
86 2 10 11

avatar image Sean L ♦♦ STAFF Jan 15 '18 at 12:42 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.



avatar image Nameless Voice Jan 15 '18 at 04:52 PM

Thanks, I posted the bug using that new system.

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

1 answer: sort voted first

This was raised in the bug tracker and as UE-54054

more ▼

answered Jan 15 '18 at 10:32 PM

avatar image

Nameless Voice
86 2 10 11

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