Spamming left click and middle click can cause the autoscroll to get stuck

[MrZander]

Description

When you press both the left and middle (wheel) buttons quickly and at the same time, the autoscroll thing gets stuck on. In this state, the page no longer scrolls and does not accept any input from the mouse. You have to switch tabs or press a key on the keyboard to get the mouse to revert back to normal.
Video

Update: I can also do it with right click

Steps to Reproduce

1. Go to a page that has a scroll bar
2. Vigorously and repeatedly press the left mouse button and the middle mouse button at the same time. (I've managed to get it stuck after just 3-4 simultaneous clicks)

Actual result:

The mouse cursor gets stuck on the autoscroll cursor, you can no longer scroll or click on anything.

Expected result:

You should either be able to scroll the page with the autoscroll feature or be able to click things with the normal cursor.

Reproduces how often:

Easy to reproduce, can do it every time and on any scrollable page

Brave version (brave://version info)

Brave	1.1.20 Chromium: 79.0.3945.74 (Official Build) (64-bit)
Revision	99b6d241cf84f7fa7434ae8a59f9e74eb1464280-refs/branch-heads/3945@{#888}
OS	Windows 7 Service Pack 1 (Build 7601.24494)

Version/Channel Information:

• Can you reproduce this issue with the current release?
  Yes
• Can you reproduce this issue with the beta channel?
  N/A
• Can you reproduce this issue with the dev channel?
  N/A
• Can you reproduce this issue with the nightly channel?
  N/A

Other Additional Information:

• Does the issue resolve itself when disabling Brave Shields?
  No
• Does the issue resolve itself when disabling Brave Rewards?
  No
• Is the issue reproducible on the latest version of Chrome?
  Yes

Miscellaneous Information:

It's relatively new, I often spam these buttons as some sort of nervous tick or something and this just recently started happening.
I also tested it in an older version of chrome before updating and it wasn't happening (I don't know what version it was, sorry. Probably a few months old as Brave is now my main browser).

[rebron]

@MrZander Can you update to 1.3.113? There were some fixes to autoscroll in the latest Chromium 80 version.

[MrZander]

@rebron Issue is still present in 1.3.113

I have an issue opened on Chromium as well
https://bugs.chromium.org/p/chromium/issues/detail?id=1036396#c7