[4.x] Prevent caching CP responses #9288
Closed
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Closes #4814
This disables caching of control panel responses, which can become problematic when using the back/forward browser buttons.
For example:
Before this PR, the entry edit form would have been cached, and you'd see the form with the unchanged field.
After this PR, the form would not be cached, and it would be reloaded, so you'd see the form in the new (expected) state.