Unknown error causes extension to stop working

[Eiion]

Description
Since this happened again, I decided it deserves it's own report:
Once again ESGST stopped working (no buttons/menus of ESGST get displayed on steamgifts), while still being displayed as running on Chrome.

Console Errors
One that's somewhat related on console:
cdn.steamgifts.com/js/prebid_v8.js:1 Failed to load resource: net::ERR_BLOCKED_BY_CLIENT

Several more on the extension's background page:

_generated_background_page.html:1 Uncaught (in promise) Object
_generated_background_page.html:1 Uncaught (in promise) Object
_generated_background_page.html:1 Uncaught (in promise) Object
browser-polyfill.js:1 Failed to send onMessage rejected reply TypeError: Message length exceeded maximum allowed length.
    at F.G.then.I (browser-polyfill.js:1)
(anonymous) @ browser-polyfill.js:1
2x browser-polyfill.js:1 Uncaught (in promise) Error: Cannot set property 'entries' of undefined
    at r (browser-polyfill.js:1)
2x browser-polyfill.js:1 Failed to send onMessage rejected reply TypeError: Message length exceeded maximum allowed length.
    at F.G.then.I (browser-polyfill.js:1)
(anonymous) @ browser-polyfill.js:1
7x browser-polyfill.js:1 Uncaught (in promise) Error: Cannot set property 'entries' of undefined
    at r (browser-polyfill.js:1)
2x browser-polyfill.js:1 Failed to send onMessage rejected reply TypeError: Message length exceeded maximum allowed length.
    at F.G.then.I (browser-polyfill.js:1)
(anonymous) @ browser-polyfill.js:1
2x browser-polyfill.js:1 Failed to send onMessage rejected reply TypeError: Message length exceeded maximum allowed length.
    at F.G.then.I (browser-polyfill.js:1)

System (please complete the following information):

• ESGST Version: 8.3.13
• Chrome Version 74.0.3729.157 (Official Build) (64-Bit)

Additional Context/Screenshot
File sizes have changed again:

Checking 003048.ldb I couldn't find any duplicate lines.

EDIT:
Closing/re-opening the browser once again doesn't fix it. This is the error on the background page:

3x browser-polyfill.js:1 Failed to send onMessage rejected reply TypeError: Message length exceeded maximum allowed length.
    at F.G.then.I (browser-polyfill.js:1)

And again the same error in console:
cdn.steamgifts.com/js/prebid_v8.js:1 Failed to load resource: net::ERR_BLOCKED_BY_CLIENT

[rafaelgomesxyz]

cdn.steamgifts.com/js/prebid_v8.js:1 Failed to load resource: net::ERR_BLOCKED_BY_CLIENT

This error is irrelevant, it's not from ESGST.

It would be nice if you could detect the exact steps that would make this issue reproduceable, but I have a feeling this issue is random and depends on the storage, which will make it much harder to fix.

Did this start happening with a specific version?

[Eiion]

It started with version 8.3.4.
(maybe this more general issue could be merged with too specific issue #1304).

What I did today was loading in all the giveaways from community train 4 and filter them. After joining a few I opened up a user profile in a new tab - where ESGST already didn't show up anymore.

First time it happened was after changing settings (see mentioned issue).

I could try reproducing the issue but time is an issue right now.

What I did try though was deleting (i.e. renaming) file 003048.ldb after switching of the extension in the extension manager.
I then restarted the browser and the extension, reloaded steamgifts and ESGST was running again.

The only thing missing that I immediately found was that individual hidden giveaways were displayed again.
I didn't have time to look further into it to see if other things are missing as well but I'm assuming that this file is the cash - or at least part of it.

Maby ESGST has trouble handling cash files that big (since there's no duplicate data inside the file) or there's an issue with addressing a large amount of data.

[rafaelgomesxyz]

I think the issue is more than that, because it doesn't make sense to go from ~2 MB to ~8 MB. My guess is that maybe something is happening when saving the storage that is corrupting it.

[Eiion]

It maybe makes sense considering the train is over 1200 GAs long, resulting in data of 1200 giveaways to be stored? I don't know.
Either way, before 8.3.4 this wasn't an issue although loading in just as many GAs as well.

From here on I don't know what else to do. I loaded in the last backup and everything seems to be working as before.
(Maybe an automated backup would be nice, where the user can set the interval.)

[rafaelgomesxyz]

Automated backup is already an option.

[rafaelgomesxyz]

v8.3.14 should allow storing large files.

[rafaelgomesxyz]

If this hasn't happened since v8.3.14, I'm going to close this issue and consider it as solved, because I think it was just the extension not being able to handle large files and therefore corrupting the storage, so please let me know.

[Eiion]

It hasn't happened since.