Manipulating Each.Offset and Limit gives unexpected results

[Sunjammer]

Fuse 1.3.2

<App>
    <JavaScript>
        const O = require("FuseJS/Observable")
        const offset = O(0)

        let items = []
        for(let i = 20; i--;)
            items[i] = {color:[Math.random(), Math.random(), Math.random()]}

        module.exports = {
            items,
            offset,
            limit : offset.map(value => Math.max(0, Math.min(items.length-value, 10))),
            next : () => {
                offset.value++
                if(offset.value>=items.length)
                    offset.value = 0
            }
        }
    </JavaScript>

    <Text Value="Offset: {offset} Limit: {limit}"/>
    <Viewport Perspective="1.7" PerspectiveRelativeTo="Width">
        <Panel>
            <Rotation DegreesY="20"/>
            <Each Items="{items}" Offset="{offset}" Limit="{limit}">
                <Rectangle Width="200" Height="200" Color="{color}" >
                    <Text Value="{= index()}"/>
                    <Translation Z="(index() - {offset}) * 20"/>
                </Rectangle>
            </Each>
        </Panel>
    </Viewport>
    <Tapped Handler="{next}"/>
</App>

In this example I'm expecting the stack to shorten as the offset approaches the end and the limit decreases. Instead I get this and I don't understand why:

[mortoray]

You don't need to constraint Limit on your own, Each will not inlucde more items than it has.

[mortoray]

This doesn't happen on fuselibs/master, it behaves like you'd expect. There is just a minor issue of it pushing the stack forward one as you exceed 10 Offset, but this might be from the JS code itself.

Where are you seeing this issue?

[Sunjammer]

This was in public Fuse 1.3.2, i'll try the latest release

[Sunjammer]

Yep, happens in 1.4 public as well

[Sunjammer]

Leaving Limit hard coded to 10 changes nothing, once the offset exceeds 10 elements are no longer removed.

[mortoray]

Are you viewing in Preview?

[Sunjammer]

Yes

[kusma]

Then this is likely due to one of the many corner-cases around previews template-handling.

[Sunjammer]

Happens in release build for android too