Steps to reproduce:
1. Create a new Unity project
2. Go to Window -> Analysis -> Profiler
3. Switch to the "Edit Mode" profiling and record for a few seconds
4. Turn off the Recording and select any frame
5. In the "Timeline" view, select the "Gfx.WaitForGfxCommandsFromMainThread"
6. Press on “Show” and open “Selected Sample Track…”
7. In the Sample Stack window copy the stack
8. In the Sample Stack window paste copied stack using keyboard shortcut
9. Observe the Sample Stack window

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Actual results:  it is allowed to paste text in Sample Stack which breaks the window - text moves higher

Expected results: it should be now allowed to paste in the Sample Stack window, window should not break

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Reproducible with versions: 6000.0.57f1, 6000.2.3f1, 6000.3.0b1

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Tested on (OS): Windows 11, macOS Sequoia, 15.6 (M1)