Post flush watchers are re-executed when leaving suspended page

[adamjedlicka]

Version

4.1.5

Reproduction link

jsfiddle.net/ocbx1hf7/1/

Steps to reproduce

Post flush watchers are NOT re-executed in synchronous pages (expected behaviour), but when route component is wrapped in suspense, watchers from olde page are executed.

What is expected?

When switching from Category 2 to Product 1 in the example, only "Product 1" should be logged in the console.

What is actually happening?

When switching from Category 2 to Product 1 in the example, "Product 1" alongside with the "Category 1" from the old page are logged in the console.

[posva]

Opened

• Suspended component still trigger watchers while being switched out core#6811