Operating system: Windows-7-6.1.7601-SP1 64 Bits
Graphics card: GeForce GTX 660 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.19
Broken: version: 2.82 (sub 7), branch: master, commit date: 2020-02-12 16:20, hash: rB77d23b0bd76f
Yes, it is mistake, yes this are different letters and sounds.
Blender saves correct symbol. It seems, line height is not enough for diacritic marks above capital letters, because there is same problem with Й.
And I assume, Deutsch capital letters with umlauts will suffer too.
Short description of error