Browser crash when attempting to tweet after tipping

After tipping, clicking on Tweet may crash the browser

Steps to Reproduce

1. Clean install on staging
2. Enable Rewards
3. Claim grant or fund wallet another way
4. Open publisher page (https://www.reddit.com/user/jsadler-brave)
5. Use inline tipping
6. Click tip amount
7. Quickly click another tip amount (repeat few times)
8. Immediately click SEND MY TIP
9. Immediately click Tweet

Note: This is an Intermittent issue, if browser does not crash, start from step 5.

Actual result:

Browser Crash. Needs to run the browser again.

Windows 7 Uploaded Crash Report ID 7c1b0025c7afe8b9 (Local Context: fe8dec3f-846c-494d-8c7f-6305e621f7a0) Ubuntu 18.04 LTS Crash Report ID d165028fa3f61bfa

Expected result:

No crash

Reproduces how often:

Intermittent issue, around 20% repro rate

Brave version (brave://version info)

Brave	0.68.114 Chromium: 76.0.3809.87 (Official Build) beta (64-bit)
Revision	111fe1e15d5ced26080a7dc239bcfe70f6c49aad-refs/branch-heads/3809@{#967}
OS	Ubuntu 18.04 LTS

Brave	0.68.114 Chromium: 76.0.3809.87 (Official Build) beta (64-bit)
Revision	111fe1e15d5ced26080a7dc239bcfe70f6c49aad-refs/branch-heads/3809@{#967}
OS	Windows 7 Service Pack 1 (Build 7601.24494)

Reproduced on staging and production. Also reproduced by tipping youtube publisher.

cc @NejcZdovc @brave/legacy_qa

[btlechowski]

I managed to record it.

I used staging env with a grant. I was connected to Belgium through VPN.

I also noticed that if crash does not reproduce, there is no need to start from step 1. It is OK to start from step 5.

Uploaded crash id for this crash: 0e594ec66abf309d

[btlechowski]

@kjozwiak The crash report was not generated. Probably due to https://github.com/brave/brave-browser/issues/4296.