Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:56.0) Gecko/20100101 Firefox/56.0 Build ID: 20170613030203 [Affected versions]: Nightly 56.0a1 [Affected platforms]: Windows 10 x64, Ubuntu 16.04 [Steps to reproduce]: 1.Launch Nightly 56.0a1 with a new profile 2.Go to Options -> Privacy &Security -> Site Data -> Settings 3.In a new tab navigate to mozilla.org 3.Open Developer-> Web Console and type "navigator.storage.persist().then(persisted => console.log(persisted));" 4.Select " Allow" [Expected result]: Settings-Site Data list should be updated accordingly (mozilla.org website should be added to the list) [Actual result]: Settings-Site Data list is updated only after is reopened

Hi Fischer, Can you reproduce this issue? Let's evaluate the priority first.

FWIW, I can reproduce this on Win10, but not on OSX.

(In reply to Hsin-Yi Tsai (55 Regression Engineering support) [:hsinyi] from comment #2) > FWIW, I can reproduce this on Win10, but not on OSX. Last month I encountered this problem is because of Bug 1364852. Since javascript error, the script won't be executed fully.

(In reply to Hsin-Yi Tsai (55 Regression Engineering support) [:hsinyi] from comment #2) > FWIW, I can reproduce this on Win10, but not on OSX. Mmm, this is weird because we are not doing immediately dynamical update. The timing of updating list are refresh about:preferences or reopen about:preferences or performing deletion operation. The reason not doing that is due to performance concern and some uncertain cases on ux.

ni myself for further project traige.

this is by design. WONTFIX