Guto Thank you for your feedback! We have received many requests from other users for a feature that allows markers to be added, and it has been on our roadmap for quite some time. The relevant ticket is here: EsotericSoftware/spine-editor531
I added a link to this thread in the comments section of that ticket. You can subscribe to this issue ticket to receive notifications when there is any progress on this issue.

Guto

Ok, good to know. I just want to double-check, since sometimes people are so used to their workflow that they don't notice new features

I agree that many people are still using older versions, which is why we're interested in integrating the script with your Chinese translation. I'll let you know once I find the time to work on that.

Many thanks in the meantime!

Guto Thank you for your feedback! I think there is some room for consideration as to whether it should be added to the filter at the top of the tree view, but I think it is certainly possible that you would want to display only certain types of constraints, so I have created an issue ticket for this enhancement here:
EsotericSoftware/spine-editor917

Guto You may want to uncheck Hide viewport skin bones in the tree view settings:

When checked, bones that are in a skin and are not active because their skin is not visible are not shown in the viewport. Also, their bone rows are not shown in the dopesheet or graph.

When unchecked, all bones are made active, regardless of which skins are visible. If you press Ctrl+A in this state, you can select all bones included in the inactive skin.

It can be helpful to see all the bones, but can also be misleading for skin bones to be active when their skin is not visible. Bone warnings that will not render correctly at runtime may render correctly when this setting is unchecked. For that reason, this setting is checked by default and should be checked most of the time.

Guto Thank you for writing the steps to reproduce the issue! I have confirmed that this issue still can be reproduced in the latest 4.3-beta, so created an issue ticket for fixing it: EsotericSoftware/spine-editor916

Guto Upon further investigation, I was able to reproduce the issue on a Mac PC. It appears that the condition for the black image to appear is either selecting an attachment with a missing image or hovering the mouse over the location of the attachment while image selection is enabled. As a workaround, disable Images selection first, then uncheck the “Missing images” checkbox to avoid displaying the black image.

I have created a ticket here to fix this issue: EsotericSoftware/spine-editor910

Guto Thank you for showing us that animated GIF! That helped us identify the cause.
It appears that this issue only occurs on Windows PCs. I was unable to reproduce this issue on a Mac PC.

We will investigate this issue, but in the meantime, you can use the Find and Replace function in the tree view to select all missing attachments at once. You can then hide or delete them and export the skeleton, which should improve efficiency to some extent.

We apologize for the inconvenience, but please wait until we have resolved this issue.

Guto As far as I can tell, this issue has not been observed in the latest stable version (4.2.43) or in version 3.8.99. Which version were you using when you encountered this problem?

It's a lot of fun!
It reminds me of a lot of fun settings with new features!
Thank you!

In the generation of the name of the constraint, could you please add '_' instead of Spacebar?
Spacing is very careful in programming.