This may not be the old behaviour, but it is the intended behaviour. If you don't rebuild, you will get crashes upon startup. This change was necessary to fix UE-49739.
REGRESSION: Yes, this does not occur in 4.17.2
When using Hot Reload, the user is prompted to rebuild project DLLs when relaunching the project in editor.
This was testing in QAGame and with a code template project.
RESULT
User is prompted to rebuild QAGame DLLs.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-50753 in the post.
| 0 |
| Component | UE - Foundation - Cpp Tools - Hot Reload |
|---|---|
| Affects Versions | 4.18 |
| Created | Oct 4, 2017 |
|---|---|
| Resolved | Oct 4, 2017 |
| Updated | Jul 14, 2021 |