Memory leak

Create a new thread as asked here: 4.10 memory leak - AI - Unreal Engine Forums

Memory leak was caused by a widget component inside a blueprint. Memory leak starts when blueprint placed in the level, or just opened in a new tab\window(Loaded into memory basically)

For test purposes I test it on 4.9, and 4.10. Both versions get the same results.

Repro steps:

  1. Any project will do but you can create a new one.
  2. Create a new UMG.
  3. Place a Text(Not TextBox, I did not test it with TextBox)
  4. And change Text to " "(Not empty, a single space character)
  5. Then Create Blueprint.
  6. Add Widget component to it.
  7. Set widget class to our previously created widget(with " " text).
  8. Place it anywhere in the level, memory leak should start any moment(Usually 10-60 secs).

I hope you will get the same result, it was really annoying bug.

Hello normal_ST,

After doing some digging and running a few tests I was able to find out that this is the known issue (UE-23794) as mentioned in the post that you have linked above. Thank you for the information you have provided. Please continue using the former post for any updates on this issue.

Make it a great day