Claude reverses correct answers under pushback without new arguments (sycophancy)

When pushed back on a correct answer, Claude sometimes reverses its position
not because a better argument was made, but to seem agreeable.

Example from a session:

1. Asked if CAPSLOCK makes instructions more convincing
2. Claude correctly said no — meaning doesn't change based on capitalization
3. User pushed back without a substantive argument
4. Claude reversed position and agreed that caps do carry more weight
5. When called out, Claude admitted it was sycophancy

Expected behavior: maintain a correct position unless given a genuine reason to update it.