Where is the algebraic loop? How to get rid of it?

I want to simulate a simple feedback amplifier in Simulink:

where the "Open Loop Amplifier" looks as follows:

    Most of the time I get "Simulink cannot solve the algebraic loop containing '...' at time 4.1951420214177304E-9 using the TrustRegion-based algorithm due to one of the following reasons: the model is ill-defined i.e., the system equations do not have a solution; or the nonlinear equation solver failed to converge due to numerical issues.

for fixed step as well as variable step.

I built exactly the same model in a Spice simulator where it works flawlessly without any issues. For that reason I do not see what's the problem. There are dyanmic elements in the loop such that there should be no "algebraic loop".

But in any case ... How do I get (reliably) rid of this error in this setup?

It is important to note that sometimes I may be able to avoid this by inserting some high frequency filters or adjusting simulation parameters but not reproducible and not reliably.

For example, inserting 1/(1+10e-12 s) directly after "Vin" in the open loop amplifier block gets rid of the error but then I run into "Derivative of state '1' in block '...' at time 3.9498179964744583E-9 is not finite." errors.

No matter where I place these, I either get algebraic loop of derivative not zero errors.

(No, 10e-12 is not too small - it is only a factor of 10 smaller than the smallest dynamic)

[Birdman]

Can you share your model?

[Daniel H]

Yes, I have attached the model.