To avoid having to deal with further issues relating to RSA keys, I've decided to migrate all my SSH keys to Ed25519.

Potential issues with RSA keys

• Key length growth: Will gradually require more bits to stay secure as compute capacity advances (Current minimum: 2048 bits)
• Not future proof: Potentially vulnerable to breaking by quantum computers
  Advantages of Ed25519 (EdDSA) keys:
• Performance: Ed25519 is the fastest performing algorithm across all metrics
• Security: EdDSA provides the highest security level as compared to other algorithms with the same key length (Source)
• Dummy proof: No need to specify number of bits when generating keys
• Shorter public keys: No wrangling with unwieldily long public key strings like in RSA 4096-bit

For context, 253 bits EdDSA is equivalent in strength to RSA ~3000 bits. As you can see, Ed25519 blows all other cryptographic algorithms out the water in terms of performance.