eth_signTypedData in brave crypto wallet renders without confirm button

[cloudonshore]

Description

When using JSON RPC for eth_signTypedData in brave crypto wallet the wallet renders the JSON of the message to be signed, but a confirm button isn't rendered.

Steps to Reproduce

1. Initialize a wallet in brave metamask with some rinkeby ETH (https://faucet.rinkeby.io/)
2. Navigate to https://trader.development.airswap.io, and create an order for ETH -> DAI (or ETH to any other token)
3. When signing, the bottom of the signature gets cut off, and can not be confirmed or cancelled

Actual result:

When signing, the bottom of the signature gets cut off, and can not be confirmed or cancelled

Expected result:

The confirm and cancel buttons would be displayed, as happens here when clicking "Click here to sign some typed data": https://weijiekoh.github.io/eip712-signing-demo/index.html

Reproduces how often:

Whenever the message is too large to be displayed in the frame, the confirm and cancel buttons get cut off. It seems that the issue is a CSS issue within the wallet that doesn't account for large signTypedData payloads.

Brave version (brave://version info)

Brave | 1.3.115 Chromium: 80.0.3987.87 (Official Build) (64-bit)
Revision | 449cb163497b70dbf98d389f54e38e85d4c59b43-refs/branch-heads/3987@{#801}
OS | macOS Version 10.14.5 (Build 18F132)

[srirambv]

Verification passed on

Brave	1.7.16 Chromium: 80.0.3987.122 (Official Build) nightly (64-bit)
Revision	cf72c4c4f7db75bc3da689cd76513962d31c7b52-refs/branch-heads/3987@{#943}
OS	Linux
Component	0.1.47

Verification passed on

Brave	1.6.51 Chromium: 80.0.3987.116 (Official Build) dev (64-bit)
Revision	dc00a510e4c2ae25c4d084cc3d946fc782249224-refs/branch-heads/3987@{#917}
OS	Windows 10 OS Version 1803 (Build 17134.523)
Component	0.1.47

Verification passed on

Brave	1.5.102 Chromium: 80.0.3987.122 (Official Build) beta (64-bit)
Revision	cf72c4c4f7db75bc3da689cd76513962d31c7b52-refs/branch-heads/3987@{#943}
OS	macOS Version 10.15.1 (Build 19B88)
Component	0.1.47