Hello,
I have created a HUDViewModel Data structure in Studio and created a bunch of other structure types with fields etc. I have then created a sample data set by pressing the feature to just generate data.

However, if I click several time on this button on an already filled set, it starts adding several children into properties that should only have one, and after that it crashes.

For example, here is the xml for the wallet section which is not an array (it seems to continue to add to it instead of replacing, and after a while, it crashes the whole editor) :

<vdctx:HudViewModel.Wallet>
    <vdctx:HudWalletViewModel CurrencyAmount="34" bIsVisible="True" FeatureName="Ut" DataKey="Quis"/>
    <vdctx:HudWalletViewModel CurrencyAmount="40" FeatureName="Purus" bIsVisible="False" bUseFading="True" DataKey="Consectetur"/>
    <vdctx:HudWalletViewModel CurrencyAmount="21" FeatureName="Id" bIsVisible="True" bUseFading="False" DataKey="Quis"/>
    <vdctx:HudWalletViewModel CurrencyAmount="82" FeatureName="Adipiscing" bIsVisible="True" bUseFading="False" DataKey="Nulla"/>
    <vdctx:HudWalletViewModel CurrencyAmount="98" FeatureName="Aliquam" bIsVisible="True" bUseFading="True" DataKey="Blandit"/>
  </vdctx:HudViewModel.Wallet>