The title is self-explanatory. For context, see the related MC-297624.
Since enchantable items are also unstackable (unless this is modified via datapack), there is no need to refill the slot using the spacebar, meaning this issue is less impactful than the related loom and stonecutter issues.
Linked issues
relates to 3
MC-297502
Mouse 2, 3, 4 and 5 can select an option in the enchanting table, loom and stonecutter UIs
Open
MC-297624
The stonecutter UI buttons are not keyboard-navigable, preventing the player from refilling the input by pressing the spacebar
Open
MC-298546
The loom UI buttons are not keyboard navigable, preventing the player from refilling the inputs by pressing the spacebar
Open
Can confirm.