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All of the SVG test suite pages exhibit this issue. The test case does not render until the title box has been scrolled out of view.
This could be symptomatic of a mismatched save/restore, something in the title box could be setting the context into an error state, could be causing the current point to be offset or could be setting a bad transform etc.
The text don't disappear anymore. Would mark it as duplicate of #18617 now. This bug discribes the problem better.
*** This bug has been marked as a duplicate of 18617 ***