Steps to Reproduce

Run keikai 5.7.0 with ZK 9.6.0,

Load empty spreadsheet

Current Result

Scroll doesn't work, console error output:

zss.wpd:30032 Uncaught ReferenceError: SimpleBar is not defined
    at zss.wpd:30032
    at doAfterMount (zk.wpd:28861)
    at mtBL1 (zk.wpd:28791)
    at mtBL0 (zk.wpd:28783)
    at mtBL (zk.wpd:28744)
    at doEnd (zk.wpd:28136)
    at Function._zkf (zk.wpd:28188)
    at zss.wpd:37845
    at doEnd (zk.wpd:28136)
    at Function._zkf (zk.wpd:28187)

Expected Result

External dependencies loaded, no error

Debug Information

appear to be introduced in https://github.com/zkoss/zk/commit/4adb15c5bf414b83293219bb1f094a03093ad831#diff-6b255c16e13f81ecabe5dc08c13d9f401e7f84dac8f599103ad3db69062ec8b9 based on FL testing.

Seem to be related to the dependency in question (simplebar) having browser condition:

https://github.com/zkoss/keikaicml/blob/72668b0ea2ed00dab49c523dd935cd83f49574bc/keikai/src/archive/web/js/zss/zk.wpd#L52

Workaround

use ZK 9.5.1.3