When you edit world any changes you make are not saved but if you try new design then it can save but the new design all addons section are “under construction” so you can’t change any addons

On the preview version of Minecraft pc if I click on play preview then under realms in settings I can click on my world of choosing and edit world it brings me the the normal menu I’ve seen before the problem is that if I activate any addons the when I click on the < on the top left to exit instead of loading all my addons it just loads instantly and if I click on edit world I can see that nothing was saved

I tried everything and noticed nothing could change even if I put the world in creative it won’t save and still be in survival but when I hit the the “try new design” on the top the new menu would save if the world was put in creative but the problem is that on the new design all the addon sections like resource and behavior pack plus the experiments section were “under construction” meaning I can’t change add or change realm addons