Dropdown attribute not updating Object nor applying to it properly/on time

[somedeveloper00]

Describe the bug
Dropdown attribute not working as expected. it updates on specific timing that's not on par with the serializableObejct.Apply...() nor serializableObject.Update(). so it neither receives data on time nor applies it on time

Expected behavior
update like other (i.e. float) fields

Code Sample
the editor window is here
and the class itself is here (look for word 'dropdown')

Screenshots
here's a video demonstrating the problem

out.mp4

Desktop: Windows 10
Unity version: 2021.2.13f1
Tri Inspector version: 1.9.7

[somedeveloper00]

alright I took a look at the source code for tri inspector, trying to find where the problem may be.
first, the enum drawer works excellent. so the issue is definitely only for DropdownAttribute. here's the code for enum drawer:

which is using Unity's default drawer. while the Dropdown attribute is using TriDropdownElement which is written like as:

(note that it's a GenericMenu and not a Popup. which in the end may be the reason why it's not applying/updating on the right time? so maybe if you used Unity's Popup system, then it'b be ok?

I hope I'd been helpful at least a little bit :p

[vanifatovvlad]

The code samples link to a private repository so I can't look at it.

How do you track changes in the inspector? Are you using OnValueChanged attribute?

[somedeveloper00]

The code samples link to a private repository so I can't look at it.

How do you track changes in the inspector? Are you using OnValueChanged attribute?

oh sorry my bad. I made it public now.

I use EditorGUI.ChangeCheckScope block

[vanifatovvlad]

I understood the problem. The recommended way to track changes is to use the OnValueChanged attribute on the root element, but not sure if this is possible in your scenario. I'll check if there is a way to fix ChangeCheckScope.

EditorGUI.Popup requires creating a displayerOptions array every frame which is not very optimal, so I did not use it

[somedeveloper00]

The recommended way to track changes is to use the OnValueChanged attribute on the root element

Ah that's good to know 👍 and yeah as you suggested, it's not possible in my code since it'll add extra hard-coded complexity for special conditions

EditorGUI.Popup requires creating a displayerOptions array every frame which is not very optimal,

right. unless cached, but I'm guessing it'll just be too much trouble on the drawer side.

also if it helps, I noticed that the serialized data is indeed being changed (visible in the video where the json changes affects everything on the left, including the selected context menu item) but the new change isn't shown on the un-opened dropdown gui. so, data is fine, and the _property in my last screenshot has the correct Value

thanks again for all the works.