When opening an RPA Recorder activity error "Failed to retrieve RPA activity error" occurs. The recording cannot be edited.

An error can be seen in server.log from the Designer:

[https-jsse-nio-8445-exec-10] (AbstractResponseStrategy.java:91) ERROR - DefaultResponseStrategy: An error occurred - incident ID [986455a4182e48488f593be411943cae] java.lang.RuntimeException: Action syntax is illegal.

Sequential operation step has the following illegal tags:
[highlight_id]. Please take a look at the supported features per versions link
at io.cloudslang.lang.compiler.modeller.TransformersHandler.wrapErrorMessage(TransformersHandler.java:115) ~[cloudslang-compiler-1.0.261.jar:?]
at io.cloudslang.lang.compiler.modeller.TransformersHandler.runTransformers(TransformersHandler.java:63) ~[cloudslang-compiler-1.0.261.jar:?]

Please open a support ticket asking for HF_1726428 (OCTCR19F1726428).

Internal note: https://rdapps.swinfra.net/hotfix/#/hotfix/26988