Multiple developers have discovered that the reverse keyword, used as part of the for syntax, will not always behave as intended. It is the intention of the syntax to cause the loop to reverse iterate over the members of the collection with no other changes/syntaxes/keywords necessary. However, in the current state, Ranges require the developer to also define the collection in reverse order, which shouldn't be necessary.

With this release, this behavior has been fixed and the reverse keyword now functions as intended for Ranges. As a consequnce of the fix, however, existing workarounds will no longer function. If you have used the "define the range in reverse" trick to workaround the problem, you will need un-reverse the range. Failure to make this change will cause the loop to be skipped entirely.

For example, if you have code that is currently written as:

for (i in 3..1, reverse) {

you will need to re-write it as:

for (i in 1..3, reverse) {

Component Tab and Component Tab Creator End of Life

In the CET 17.0 release in May 2026, Catalogue Component Tab and Component Tab Creator will reach their End-of-Life (EOL) and be retired completely.

As part of the EOL effort,

• All component tab related interfaces will be removed. They will no longer receive bugfixes or be shipped as part of CET abstract/custom builds, and you will no longer be able to reference these classes in your packages. See compile-time changes below under "Component Tab and Component Tab Creator End of Life" section.
• The Component Tab file format (.cmtbxt) will also be retired and no longer be supported starting from 17.0. See runtime/behaviour changes below under "Component Tab File Format (*.cmtbxc) End of Life"

All developers are strongly encouraged to migrate to the new Table of Content (ToC) Toolbox introduced in 15.5 Major as the replacement for the Component Tab - [read more and learn how to migrate or build toolbox with ToC here] (https://dev-docs.configura.com/design-system/cet-developer-guides/catalogue-table-of-contents-with-the-new-ui)

Improved the texture mapping of many wall symbols such as arced walls, windows and curtains.