The operator assumed it was called on a mesh object, which has
mostly been the case because of lack of support for other object
types, but the new curves object is supported, which is the situation
in the report.
Differential Revision: https://developer.blender.org/D15063
Regression in [0] which is useful when applying modifiers as a shape-key
but not when applying modifiers which keeps the existing shape-keys.
[0]: 65c5ebf577
Support merging UV's that share the same vertex and are very close when
applying modifiers.
This is needed to prevent UV's becoming "detached" which can happen when
applying the subdivision surface modifier.
This regression was caused by [0] which removed selection threshold for
nearby coordinates. While restoring the UV selection threshold could be
done - some selection operations that walk around connected UV fans
wouldn't behave in a deterministic way (such as select shortest path).
There are also other cases where UV's may be compared without a
threshold such as tangent calculation and exporters which have their own
logic to handling UV's.
Also resolves T86896, T89903.
[0]: b88dd3b8e7
Reviewed By: sergey
Ref D14841
This commit adds support for the curves object to the apply modifier
operator. A warning is added when the evaluated result of the modifier
doesn't contain any curves data.
Differential Revision: https://developer.blender.org/D14730
