Did Microsoft change Random default seed?

Today, I was doing some examples in .NET Core as a small test, and I have come across some interesting thing.

Before (~ .NET Framework 4), Random used Environment.TickCount, but now I believe this has changed.

Consider the following code:

while (true)
{
    Random random = new Random();
    Console.WriteLine(random.Next(0, 10000));
}

In older .NET Framework versions, the new Random() empty constructor would use Environment.TickCount, which would lead to repetition of pseudo-random values.

So you could expect results like:

542
4211
5244
5244
5244
9501
9501

so on and so fourth.

On the latest .NET version using the latest compiler, I have received this following result:

5332
220
3928
524
2973
2840
4965
5667
657
6434
3170
3046
7044

Which is definitely improved.

Other S.O questions demonstrating this behaviour in older versions:

How do I generate a random int number?

generate random numbers with no repeat in c#

Non-repetitive random number

Is C# Random Number Generator thread safe?

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My setup: .NET Core 2.2 / latest C# compiler.

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The actual question

So my question is, has the PRNG really improved or they just changed constructor to use another default seeds, and, if so, what they're using as a seed? Is it safer now for cryptography?