Reproduction steps:
1. Open the attached “GraphIssue” project
2. Open the “Assets/IssueGraph” Asset using the Graph Editor
3. In the Graph Editor, create a new “ContextOne” Node (Context menu > Create node > ContextOne)
4. Press “Add a Block” on the “ContextOne” Node
5. In the Add a Block window, observe that “BlockOne” is available
6. Create a new “ContextTwo” node (Context menu > Create node > ContextTwo)
7. Press “Add a Block” on the “ContextTwo” Node
8. In the Add a Block window, observe the available Blocks

Expected result: “BlockTwo” Block is available
Actual result: No Blocks are available

Reproducible with: 0.1.0-epx.2, 0.2.0-epx.1 (6000.2.0f1, 6000.3.0a4)
Couldn't test with: 0.2.0-exp.1 (6000.0.55f1) (Graph Toolkit not supported in this version)

Reproducible on: macOS Sequoia 15.5 (M1 Max), Windows 10
Not reproducible on: No other environments tested

Note: If you save the Graph, restart the Editor and select “Add a Block” on the “ContextTwo” first, the “BlockTwo” will be available, but “BlockOne” will not be available for “ContextOne”