has anyone stumble upon the same issue? litterally one day earlier i was editing my spine project and everything with the curves tools was fine. it seems like it has't dissapered at all but somehow became invisible. still can press them though, just need to remember where they set up 
spine version 4.2
It seems like you are experiencing an issue where the toolbar in the Curves window has become invisible in Spine version 4.2. This could be related to a display or UI glitch. A few steps you can try to resolve this issue include checking if your graphics drivers are up to date, restarting Spine, or resetting the Spine preferences by deleting the prefs.json file. If the problem persists, you might want to try using a different version of Spine to see if the issue is specific to version 4.2.
foxin12 The Google Drive link you posted appears to be inaccessible due to permission issues. Could you please change the settings so that we can view it, or attach it directly to this thread?
Also, note some of the bugs in 4.2 have already been fixed in 4.3-beta. We would appreciate it if you could check to see if the problem can be reproduced in 4.3-beta.
sorry, now it must be opened. we have a project that already based on 4.2. this problem isnt that bad though, just for you to know
yep, in 4.3 the issue is solved
foxin12 Thank you for showing us the video. Indeed, I was able to reproduce the problem in 4.2.42, and when I reverted to 4.2.40, the bug did not occur, so it seems to be a bug caused by the latest update. We would like to address this issue as soon as possible. However, if it is currently interfering with your work, please revert to version 4.2.40.
I have created an issue ticket for this fix:
EsotericSoftware/spine-editor895
You can subscribe to this issue ticket to receive notifications when there is any progress on this issue. We apologize for the inconvenience!
