(I guess) starting with version 6.4 there is no automatic time conversion in hours anymore when inserting minutes higher than 59 like "0:104" minutes in a cell. Until now this was automatically converted and interpreted as "1:44" (1 hour an 44 minutes), but now it shows only "0:104" as unknown value.
This is not a bug, but deliberate change - see https://git.libreoffice.org/core/+/7d72b9d34c1183b7471a7a97c007aba10de2d27e: > Input with subsequent part greater than 59 is not time or duration > > Like 1:123 or 1:1:123 is text, but 123:1 or 123:1:1 is a duration. See also tdf#134455, where handling of invalid times was explicitly restored inside TIMEVALUE function.