Nothing big in the newest snapshot 24w33a when a repeater is placed sideways to a powered repeater. A bedrock line appears. Doesn't seem to matter what material it's been placed on.
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This seems to duplicate MC-4449 which was resolved as works as intended 🙂

Please see Minecraft Wiki. It's a normal feature in Minecraft.
Thank you for your report!
We're tracking this issue in MC-4449, so this ticket is being resolved and linked as a duplicate.
That ticket has already been resolved as working as intended, which means this is not considered a bug and won't be fixed. Please do not leave a comment on the linked ticket.
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