issue rendering/displaying tabs which causes artifacts and other issues due to `VulkanStudy:Disabled`

Description

I’m noticing that my Samsung S8 Ultra Tablet is having issues loading tabs at the top. I’m seeing the following occurring:

• graphic artifacts
• blank tabs with no text
• entire row of tabs missing
• entire row of tabs appear is a dark/black line

They’re usually corrected after the page loads or you tap on the tab but it’s not a good experience. Switching between tabs is also causing tons of artifacts and strange behaviour. This isn’t happening with 1.42.97 Chromium: 104.0.5112.102.

However, I think this is due to Vulkan. Maybe something was changed on C105 that’s causing this particular tablet to run into rendering issues when VulkanStudy:Disabled.

Using BETA which has C105 and also has ``VulkanStudy:Enabled` works fine without any issues and everything is rendering correctly.

Steps to reproduce

1. install/launch and version of Brave that has C105 (used https://github.com/brave/brave-browser/releases/tag/v1.43.87)
2. open ~3-4 different tabs and re-launch the browser
3. you’ll notice there’s issues loading the tabs
4. once the browser is re-launched, attempt switching to other tabs
5. tapping on the omnibox also causes the issue to happen

Actual result

Expected result

Tabs should be loading without any issues/rendering artifacts.

Issue reproduces how often

100% reproducible using the STR/Cases outlined above.

Version/Channel Information:

• Can you reproduce this issue with the current Play Store version? Yes (with the 1.43.x RC where Vulkan is disabled)
• Can you reproduce this issue with the current Play Store Beta version? No
• Can you reproduce this issue with the current Play Store Nightly version? No

Device details

• Install type (ARM, x86): ARM
• Device type (Phone, Tablet, Phablet): Samsung Tab S8 Ultra
• Android version: Android 12

Brave version

Brave | 1.43.87 Chromium: 105.0.5195.68 (Official Build) (32-bit)
--- | ---
Revision | ad13e82529051bac6a0e65f455e6d7a1e5fd7938-refs/branch-heads/5195@{#903}
OS | Android 12; Build/SPSA.220305.013

Website problems only

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

Additional information

[kjozwiak]

Enabling Vulkan via brave://flags#enable-vulkan fixes the issue 👍 The above will be resolved once we enable Vulkan via Griffin.

[juguerin3]

Same issue with my Galaxy Tab S8 Plus for about 2 weeks.

The issue look like solved by enabling Vulkan…

@kjozwiak Really thanks for this tip !