Simulink Freezes when moving blocks

Hello,

Simulink for some reason freezes when I am trying to blocks around, it seems to happen when there are a lot of signals connection (something like 20+).

I do have a high end PC which should not factor in this issue.

Maybe it's something related to Java?

thanks.

MATLAB Version: 9.11.0.1873467 (R2021b) Update 3

[Benjamin Thompson]

Can you post an example? With a lot of interconnections to a block, you will probably get better results reconnecting them manually anyway.

[Matthew Gordon]

I'm seeing the same issue with 2021b Update 3, simple models, no custom blocks or libraries in the model, working on local storage.

I can't post code but I've just had it happen on a model with ~20 blocks. Something as simple as selecting and dragging a few blocks is enough to make this happen. It's quite random but often results in having to kill the MATLAB process and start over.

[Dmitry Stadnik]

Does it still happen if you disable smart guides or hold down Alt key while dragging blocks? I know it could be a hassle but it could help to narrow down the issue.

[Jason Gallia]

Are you selecting multiple blocks and trying to move them together when MATLAB freezes? Does moving the blocks one at a time cause the same problems?

[Rafael]

Any solution for this issue? It has been happening a lot to me lately using R2021b Update 4 (9.11.0.2022996)

My model has several connections and a very high number of signals (>400) and it blocks randomly even when I'm moving signals labels.

[Nicholas Kottenstette]

Similar behavior in 2022a Release 8. Deleted an input while moving sigals around and just hangs.

Is there a keyboard shortcut to kill this 'hang up' without having to start task manager and killing my entire matlab session.

Note:

matlab console stilff functions, but all open simulink models are unresponsive as is model explorer.

30 min of my day wasted, this is becoming an all to common occurence. I would say about a bi-weekly event.

[Roopa]

I have been facing the same problem, in 2022b. Twice in three days recently. Every time it is a different thing after which it hangs, like editing the constant value of a block or reshaping a block or area.

Is there a MATLAB shortcut to stop the hang without killing the whole session? Ctrl+C doesnot work.