Describe the bug

View cells do not apply to any terminal until the inventory grid in the terminal is updated by adding or removing an item. This occurs every time a terminal is opened.

To Reproduce

Encode a view cell with some items
Put it into a terminal
Observe that nothing changes
Click an item
Filtering applies

Expected behavior

Filtering applies when the View Cell is inserted and when a Terminal with a View Cell is opened.

Additional context
View Cell:

Terminal upon view cell insertion / Opening with an inserted view cell:

Terminal upon inventory update:

Environment
Singleplayer

• Minecraft Version: 1.12.2
• AE2 Version: rv6-stable-7-extended_life-v0.55.20
• Forge Version: 14.23.5.2860

Cannot reproduce on v0.55.29, filtering applies correctly when a View Cell is inserted, with or without upgrades. Please let me know if this is still a problem, and I'll reopen the issue.