Unknown template name

Something weird im facing… several times during the development of my UI when working on the UIBuilder i hit Ctrl+S to save and one particular item “asset-switcher-template” dissapears from the layout and i see this error on the console log…

The template do exist and it is even listed on the proyect library…
em i doing something wrong?

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Hello! Can you share with us what version of Unity you’re on, and the part of your UXML referring to the template file?

Thanks in advance!

Unity version: V. 2020.3.12f1 Personal
UI Toolkint: Version 1.0.0-preview.16 - August 16, 2021
UI Builder: Version 1.0.0-preview.18 - October 12, 2021

Line 4 and 10… if i “edit in context” and even on a new UI window, sometimes i will Ctrl+S and it will remove a lot of items, not just even that one… thinking about it it seems that it removes all ui:Instance items, because the IMGUIContainer survives this bug…

xml** **<ui:UXML xmlns:ui="UnityEngine.UIElements" xmlns:uie="UnityEditor.UIElements" xsi="http://www.w3.org/2001/XMLSchema-instance" engine="UnityEngine.UIElements" editor="UnityEditor.UIElements" noNamespaceSchemaLocation="../../UIElementsSchema/UIElements.xsd" editor-extension-mode="False"> <ui:Template name="ui-control-type-index" /> <ui:Template name="ui-control-type-color" /> <ui:Template name="asset-switcher-template" src="asset-switcher-template.uxml" /> <Style src="/Assets/dummy.uss" /> <ui:VisualElement style="height: 100%; width: 50%; left: 10px; top: 10px; margin-left: 0; margin-right: 0; margin-top: 0; margin-bottom: 0; padding-left: 19px; padding-right: 19px; padding-top: 19px; padding-bottom: 19px;"> <ui:IMGUIContainer name="logo" style="background-image: url('/Assets/icono.png'); height: 80px; width: 80px; margin-bottom: 24px;" /> <ui:Instance template="ui-control-type-index" name="options" /> <ui:Instance template="ui-control-type-color" name="color-picker" /> <ui:Instance template="asset-switcher-template" name="asset-switcher-template" /> </ui:VisualElement> </ui:UXML>** **

reported this as a bug:

CASE IN-2592

Thanks for the bug report!