Seen on client versions 4.18.0 and 4.19.0-4003 on Fedora42 with server build #4115 on RHEL10. Translations for "Filename" that overflows are for languages Spanish, French, and Portuguese (BR). This string appears to gone through a bit of changing in the past. Bug 4087 introduced translations for the file chooser dialog (commit r24168). During this development, it was pointed out (see bug 4087 comment #2) that these translations overflow, which lead to the use of "Name" instead (see commit r25308). Later in bug 4482, "Filename" and a couple of other strings that all went by "Name" were differentiated better in commit r27180, which lead to the return of the "Filename" label with corresponding translations in commit r27420.
Created attachment 1278 [details] Overflow of French "Filename" translation
Created attachment 1279 [details] Overflow of Spanish "Filename" translation
Created attachment 1280 [details] Overflow of Portuguese "Filename" translation