Trim or divide arc

Can the arches be trimmed ? I guess it cannot be done. This seems like a necessary functionality
I tried divide too but although it selects the arc, when I select cutting point, it keeps saying point on not entity.
How can I trim or divide an arc?

Trimming arches works for me. Did you mind selection order? Limiting entity first, then entity to be trimmed. Layer locked?

Divide also works. Try with Snap on Entity on, when selecting cutting point.

Another possible reason: Is there an image underneath? It catches all clicks. Switch off image layer.

Trim doesnt work . Yes I am aware of the trimming order and no there is not another image underneath
Divide mostly doent work, sometimes, when it is in good mood, it works , but mostly doesnt work. There is nothing different I do between the two situations. And yes I know how to apply trim and divide command. I do it all the time with lines.

What kind of arcs do you want to trim?
Only circular arcs can be trimmed, no elliptical arcs or splines.
Or are they part of a polyline?

What kind of drawings do you work on?
Which units?
On very large drawings, e.g. land surveying, or drawings far from the origin (large X/Y coordinates), there are few issues with tolerance and exactness of rendering.

Is it only in certain drawing, maybe a large one?
Does it work in a pristine small drawing, with just some elements?
If not you may provide a sample drawing here for testing.

Maybe this is your issue:https://forum.librecad.org/point-select-not-working-tp5720321p5720342.html
Fixed in recent V 2.2.0 rc. If you are on Windows, try it. Better anyway.

It is in a very small drawing with only several shapes.

I have both spline and arc. It didnt work on arc either Now it works for arc. Not sure why.