Experimental Mode features doesn't works on Realms

Hello, I will talk about an important bug/problem on Minecraft Bedrock Edition which is quite annoying, It's that Experimental Mode features doesn't works on Realms, I have created an addon which adds new blocks, items, Mobs and some new ore generation but it doesn't works (nothing except Mobs has been added on my Realm). I have check several times if the "Experimental Mode" was enabled, my Addons enabled on my Realm but always nothing.
That's why I report this problem and thanks in advance if developpers take into account this problem and try to fix it
Ps : My English is bad, because I'm French, sorry if there are a lot of mistakes.