"Copy Frame Link" hidden in indexed MP4

[EthicalEgret]

I’m playing an MP4 file that is indexed, not imported. I’ve stopped at the frame with which I want to link. When I open the context menu (right click), it shows only the option “Copy”, and the option is disabled:

If I go to the edit menu, “Copy Frame Link” is not present:

But, “Copy Frame Link” does appear if I hold CMD+SHIFT:

If I use the search feature in the Help menu, the option also appears:

Why is this happening? Frame links do work for this file.

[EthicalEgret]

I think I’ve figured out what’s happening. It might be that the quicktime player is interfering. If I right click in the margins (the black space on the sides or top and bottom), the standard context menu is available.

[cgrunenberg]

The contextual menu is unfortunately handled by macOS in case of recognized live text but the action menu is always accessible and contains the same commands.