Tab close button overlaps file icon/label, and editor content renders with oversized clipped font

Does this issue occur when all extensions are disabled?: Yes

- VS Code Version:
- OS Version:

Steps to Reproduce:
1. Open a Go file (e.g. `pm.go`) in the editor from the Explorer.
2. Observe the tab bar at the top: the tab's language icon, filename, and close ("x") button are rendering overlapped instead of laid out side by side.
3. Observe the editor content area: the file content renders in an abnormally large font size and appears clipped (e.g. only "packa..." is visible instead of the full `package` declaration line).

Expected: Tab should show icon, filename, and close button in normal layout; editor content should render at the configured/default font size, fully visible and not clipped.

Actual: Tab elements overlap; editor text renders oversized and cut off.

Screenshots attached.