[BUG] Atlassian Rovo MCP widgets (e.g. Jira search results) render unreadably bright since today — worked fine until yesterday

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Description
Widgets rendered from the Atlassian/Rovo MCP connector (e.g. the searchJiraIssuesUsingJql result cards) are rendering extremely bright/washed-out and hard to read. This is a regression — the same widgets were rendering correctly (readable) up until yesterday; today they suddenly appear this way with no change on my end.

Environment

• Claude Code, Desktop Version 1.49585.0
• OS: Windows 11 Pro
• Theme: Dark mode
• MCP integration: Atlassian (Jira/Rovo), tool searchJiraIssuesUsingJql

What Should Happen?

Expected behavior
Widget cards render with readable contrast, consistent with the app's dark theme (as they did until yesterday).

Error Messages/Logs

**Actual behavior**
Widget cards render very bright/light, with washed-out low-contrast text, making them hard to read.

Steps to Reproduce

Steps to reproduce

1. Use an MCP tool call that returns an Atlassian Rovo widget (e.g. a Jira issue search).
2. Observe the widget card(s) rendered inline in the conversation.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

1.49585.0

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

Additional context
Appears to be a regression (working yesterday, broken today) — possibly an app update or a change in how third-party MCP widgets inherit/ignore the host theme.