after group of bookmarks deleted on device2, deletion is not synced to device1

[LaurenWags]

Description

I deleted a chunk (100) bookmarks on device2 and the bookmarks were not deleted on device1. However, deleting a chunk of bookmarks on device1 does delete the bookmarks on device2.

Steps to Reproduce

1. Clean profiles using 0.59.35 on both laptops (I was syncing macOS <-> macOS)

2. Designate one to be macOS1/device1. Import 5k bookmarks.
   brave_sortish_5000 - ordered.html.zip

3. On the other device (macOS2/device2) import 1k bookmarks.
   brave_sortish_1000 -ordered.html.zip

4. Start sync chain on macOS1 and join on macOS2.

5. In about 10-15 minutes devices should be synced fully.

6. On macOS2, drill into the 0-99 folder all the way down to the 1109 folder. Delete the first 100 bookmarks in this folder (1-100).

Actual result:

This bookmark deletion will never get synced to macOS1.

Expected result:

In the image above, 1-100 should not be there.

Reproduces how often:

easily

Brave version (brave://version info)

Brave	0.59.35 Chromium: 72.0.3626.81 (Official Build) (64-bit)
Revision	ac8b982e05014492d1bd7d317628a4f22a97ffa0-refs/branch-heads/3626@{#796}
OS	Mac OS X

Reproducible on current release:

• Does it reproduce on brave-browser dev/beta builds?

Website problems only:

• Does the issue resolve itself when disabling Brave Shields?
• Is the issue reproducible on the latest version of Chrome?

Additional Information

I took the STR a bit further and did the below, which worked successfully

• On macOS1, drill into Imported folder and navigate to 1000-1099 folder.
• Delete the first 50 bookmarks (1000-1050)
• Wait 5 minutes, this deletion is synced to macOS2.

[AlexeyBarabash]

Could not reproduce on 0.62.0 master, trying on 0.59.35 stable.

[AlexeyBarabash]

Could not reproduce it on 0.59.35 also , but on step 5 devices were not synced completely in more than a hour, the last inner folder on device 2 had 3395 of 3956 bookmarks, 75-518 were missing. On example of bookmark 444 I could see device 1 had sent it, but device 2 had never received.

[AlexeyBarabash]

I could not reproduce this issue:

Brave	0.65.44 Chromium: 74.0.3729.61 (Developer Build) (64-bit)
Revision	5df2c8936783bd7575987e45d72a92fcf528496b-refs/branch-heads/3729@{#645}
OS	Linux

I think, it had been fixed by brave/sync#284.