That would be removing the line that currently trims it and updating the tests. Jake, are you up for the job? The line you would need to remove is currently being changed, but here is the pointer: https://chromium-review.googlesource.com/c/chromium/src/+/642452/4/third_party/WebKit/Source/devtools/front_end/resources/ServiceWorkerCacheViews.js#344

Fiiiine I'll give it a go

(I'm actually pretty excited at giving it a go)

@Jake: still excited ? :)

Ah sorry, didn't find the time for this 😞

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8ffd6173380d5327c0764a87ee548d4ef3603dd7

commit 8ffd6173380d5327c0764a87ee548d4ef3603dd7
Author: Xunran Ding <xunran.ding@samsung.com>
Date: Sat Jul 28 01:54:34 2018

Start same-origin URLs with slash in cache storage dev tools

Bug:  760102 
Change-Id: I3811976622dcc06845ac970de7436d7f1fb6896e
Reviewed-on: https://chromium-review.googlesource.com/1146122
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Commit-Queue: Xunran Ding <xunran.ding@samsung.com>
Cr-Commit-Position: refs/heads/master@{#578893}
[modify] https://crrev.com/8ffd6173380d5327c0764a87ee548d4ef3603dd7/third_party/WebKit/LayoutTests/http/tests/devtools/cache-storage/cache-data-expected.txt
[modify] https://crrev.com/8ffd6173380d5327c0764a87ee548d4ef3603dd7/third_party/WebKit/LayoutTests/http/tests/devtools/cache-storage/cache-deletion-expected.txt
[modify] https://crrev.com/8ffd6173380d5327c0764a87ee548d4ef3603dd7/third_party/WebKit/LayoutTests/http/tests/devtools/cache-storage/cache-entry-deletion-expected.txt
[modify] https://crrev.com/8ffd6173380d5327c0764a87ee548d4ef3603dd7/third_party/WebKit/LayoutTests/http/tests/devtools/cache-storage/cache-live-update-cache-content-expected.txt
[modify] https://crrev.com/8ffd6173380d5327c0764a87ee548d4ef3603dd7/third_party/blink/renderer/devtools/front_end/resources/ServiceWorkerCacheViews.js