Jira using double encoding for characters in referrer URL when loading dashboard

Issue Summary

Jira using double encoding for character in referrer URL when loading dashboard

Steps to Reproduce

1. Refresh Jira dashboard while recording network traffic in browser (developer tools)
2. Once the page is loaded, search for "up_rendering" text in browser network console
3. Click on one filtered request and observe double coded characters:
   

Expected Results

Jira doesn't double encode the characters, which means that space character is encoded as "%20".

Actual Results

Jira double encodes chracters, which means that "%20" appears as "%2520" (as "%" characters corresponds to code "%25").

This is also visible on this piece of URL extracted from the HAR file:

...rules=%257B%2522rules%2522%253A%255B%255D%257D&up_renderingContext=&up_keys=&up_itemKeys=&up_username=&url=http%3A%2F%2Flocalhost%3A7810%2Fjira781%2Frest%2Fgadgets%2F1.0%2Fg%2Fcom.atlassian.streams.streams-jira-plugin%3Aactivitystream-gadget%2Fgadgets%2Factivitystream-gadget.xml&libs=auth-refresh

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available